The main focus of this thesis is in understanding the role of phase separation and microstructure in determining the physical properties of manganites. We also aim to be able to tune certain material properties using appropriate control mechanisms. For this, an understanding of the local electronic properties of manganites is essential. We thus set out to study the local electronic states in manganites using a highly sensitive probe: the scanning tunneling microscope (STM). The chapter 1 of the thesis gives an introduction to manganites, and of how manganites are susceptible to various perturbations due to closely lying ground states and an intricate interplay of their charge, spin and lattice degrees of freedom. Chapter 2 of this thesis gives a detailed account of various experimental methods used in the current investigation. In particular, we describe the design and fabrication of a variable temperature ultra-high vacuum scanning tunneling microscope (UHV-STM) which was used to carry out spatially resolved measurements on various manganite systems. This chapter also describes sample fabrication techniques by which strain and microstructure of thin films can be controlled. Other characterization techiniques, such as tranport and magnetotransport measurements, are also described in detail. Chapter 3 presents our investigation of the role of microstructure and phase separation on the DOS and local electronic properties of manganite thin films. We describe various spatially resolved STM/STS measurements carried out on La0.67Sr0.33MnO3 and La0.67Ca0.33MnO3 films having different micrsotructure and varying degrees of phase separation. We also present a theoretical model used in interpreting STS data to account for finite temperature effects and explain the existing data in this context. We use this model to gain insight into the behaviour of the DOS at EF near the MIT where thermal smearing can often give rise to misleading inferences. Chapter 4 presents our investigation on the density of states in a typical charge ordered manganite system, Pr1-xCaxMnO3. We describe STS measurements carried out on this system to study the occurrence and evolution of the charge ordering (CO) gap as a function if temperature as well as tunneling current. We report the observation of destabilization of the CO gap using tunnel current injection by an STM tip. Chapter 5 presents our investigation into the controlled and localized “nanoscale” phase separation in Pr1-xCaxMnO3 (PCMO) using an STM tip. The investigations were carried out on PCMO single crystal and PCMO epitaxial films. Our results raise the possibility of nano-fabrication of metallic nanoislands in a CO matrix using an STM tip. We demonstrate some examples of this and also raise the relevance of intrinsic phase separation in this context. We show that the “melting” of CO using tunnel current injection by an STM tip is analogous to the magnetic field-induced melting of CO on a microscopic scale. Chapter 6 summarizes the important results of this thesis work and suggests the scope for future experiments.

<div>The global demand for energy of mankind, the ever-increasing cost of energy, and the expected depletion of fossil energy carriers within the next centuries urge the exploration of alternative and more sustainable ways to provide energy. The current quest for energy-efficient technologies for the replacement of existing cooling devices has made the magnetocaloric effect a field of current scientific interest. Cooling technologies based on magnetic refrigerants are expected to have a better environmental impact compared with those based on the gas compression-expansion cycle. This technology provides an alternative for refrigeration applications with advantages, such as high energy efficiency, environmental friendliness, and low power consumption. In search of promising magnetocaloric materials, several rare earth-depleted transition metal-based materials were designed and investigated.</div><div>In this work, RCrxAl2-x and RZnAl (R = Gd, Tb, Dy, Ho) belonging to the ternary rare-earth transition-metal Laves phases, were chosen as the starting point to establish the effect of valence electron concentration (VEC) on the magnetic behavior and magnetocaloric effect. Our result and the results from the previously studied RTAl phases (T = Cu, Ni, Co, Fe, Mn) shows that the perturbation of the valence electron concentration at the Fermi level is found to be the driving force that dictates the crystal structure, magnetocaloric and magnetic properties of these systems. Most notably, the decrease in the valence electron concentration at the Fermi level leads to an increase in the curie temperature.</div><div>In addition, we have further extended this theory to GdNiAl2 systems. GdNiAl2 is a known magnetocaloric material which exhibits an isothermal magnetic entropy change of ΔSM = 16.0 Jkg-1K-1 at TC = 28K under a magnetic field change from 0-5T. However, the low TC limits its application as a room temperature refrigerant. We, therefore, substituted Co for (Ni/Al) in the structure of GdNiAl2, intending to substantially perturb the position of the Fermi level of Ni since that will lead to a decrease in the VEC and hence elevate the TC. The study was also extended to another Icosagenides (Ga,), which saw the substitution of Ga for Al in GdNiAl2 and its Co substituted analogs. The Ga analogs exhibit complex magnetic behavior with a cascade (multiple) of magnetic transitions, as opposed to the rather simple magnetism of their Al congeners.</div>

La thèse est dédiée au développement des sondes à base de capteurs magnétorésistifs capable de détecter les trois composantes du champ simultanément pour le contrôle non destructif par courants de Foucault et pour l’imagerie magnétique. Une première partie donne un aperçu de l’état de l’art des capteurs et des méthodes d’imagerie et du contrôle. Dans une seconde partie, la réalisation des sondes trois axes est donnée. Cela a inclus la micro fabrication, la réalisation de l’électronique de lecture, la conception et la réalisation de la partie mécanique et d’émission. Pour cela un travail important de simulation a été nécessaire. L’application de ces sondes sur des cas modèle pour l’imagerie magnétique avec une résolution submillimétrique est ensuite décrite. La sonde proposée dans cette thèse a été aussi utilisée avec succès pour détecter des défauts dans des échantillons d'aluminium et de titane avec un bon rapport signal sur bruit. / The thesis is dedicated to the development of probes based on magnetoresistive sensors capable of detecting the three components of the field simultaneously for eddy current non-destructive testing and for magnetic imaging. A first part provides an overview of the state of the art of sensors, and imaging and control methods. In a second part, the realization of the three-axis probes is given. This included the micro-fabrication, the realization of the reading electronics, the design and realization of the mechanical part and emission. For this, an important simulation work was necessary. The application of these probes to model cases for magnetic imaging with submillimeter resolution is then described. The probe proposed in this thesis has also been used successfully to detect defects in aluminum and titanium samples with a good signal-to-noise ratio.

Electronic structure of transition metal oxides has been a subject of intense research since decades due to the wide spectrum of properties that they exhibit, like high temperature superconductivity, metal-insulator transitions (MIT), phase separation etc. Among these, colossal magnetoresistance (CMR), i.e. a sharp drop in the electrical resistance by the application of an external magnetic field, is a property of fundamental and technological importance. In the present study we investigate several of these interesting properties ranging from colossal magnetoresistance, metal-insulator transitions and phase separation phenomena on a wide range of magnetoresistive systems. All these properties originate in transition metal oxides due to a competition between the strong inter-atomic Coulomb interaction strength within the transition metal d electrons and a large hopping interaction strength between the metal d and oxygen 2p states. In this thesis we report the investigation of the electronic and magnetic structures of some magnetoresistive oxides, including various double perovskites and manganites, using various high energy spectroscopies in conjunction with various theoretical approaches. The samples for the present experimental investigation were prepared by different synthetic routes, such as solid state reaction, nitrate method, d.c arc melting and float zone method, and were characterized by x-ray diffraction, four probe resistivity, magnetic susceptibility, optical absorption and energy dispersive analysis of x-rays while some of the samples were supplied by our collaborators. Various spectroscopic techniques like x-ray photoemission spectroscopy (XPS), ultraviolet photoemission spectroscopy (UPS) , bremsstrahlung isochromat spectroscopy (BIS), x-ray absorption spectroscopy (XAS), x-ray magnetic circular dichroism spectroscopy (XMCD) , electron energy loss spectroscopy (EELS), spatially resolved photoelectron spectroscopy and M¨ ossbauer spectroscopy were used to probe the samples. Theoretical methods include configuration interaction cluster approach to fit the XAS and XMCD spectra while ab initio band structure calculations along with the least-square fitting procedure was used to fit some of the valence and conduction bands. Following a general introduction in Chapter 1, the details of various experimental and theoretical techniques are discussed in Chapter 2 of this thesis. Recently, a double perovskite, Sr2FeMoO6, belonging to a general family of halfmetallic ferromagnetic oxides, has shown a spectacularly large magnetoresistance even at the room temperature and at relatively small applied magnetic fields compared to the extensively investigated class of magnetoresistive manganites. Physical properties of this compound is strongly influenced by the Fe -Mo ordering. We hence synthesized Sr2FeMoO6 sample, both with high and low degree of Fe/Mo ordering. Spectroscopic investigations of these samples suggest the presence of Fe rich and Mo rich domains of the type Sr2Fe1+xMo1−xO6 in disordered Sr2FeMoO6 at times. This prompted us to prepare bulk samples of Sr2Fe1+xMo1−xO6. In Chapter 3 we address various issues related to Fe/Mo ordering like saturation magnetization, variation of TC, and CMR as well as oxidation state of Fe and Mo in Sr2FeMoO6using this new series, ”Sr2Fe1+xMo1−xO6” as it offers a better control on the Fe/Mo bonds by controlling x. On the basis of the electron spectroscopic studies in conjunction with a configuration interaction cluster calculation model coupled with the conduction band, we claim that Fe remains in 3+oxidation state throughout the series, where as Mo changes its valency to maintain the charge neutrality. An analysis of the magnetic momentas a function of x suggests that Fe at the ”wrong” crystallographic site is coupled anti-parallel to the Fe moments at the ”correct” site. Additionally, Mo depolarizes to the extend proportional to the number of Mo sites in the near-neighbor co-ordination shell. Continuing with the double perovskites in Chapter 4 we investigate the electronic and magnetic structure of Sr2FeMoO6, Ca2FeMoO6 and Ba2FeMoO6using XAS and XMCD studies. We find that the conventional XAS and XMCD calculations based on configuration interaction of a typical fragment, FeO6in this case, is insufficient to reproduce the experimental spectrum as the compounds considered here are metallic. In order to include the non local charge transfer, we coupled FeO6 octahedra to a conduction band which mimics the Mo band. Within this model we obtained a good fit to the experimental spectrum. Chapter 5 deals with another series of double perovskite (Sr1−yCay)2FeReO6which exhibits a rich phase diagram since it undergoes a metal insulator transition (MIT) with composition at low temperatures. This system becomes more interesting due to the presence of a temperature driven MIT for higher y compositions. We find that the MIT is not related to the change in valency of Fe and Re. Analysis of the near Fermi edge valence band spectra suggests opening up of a soft gap. The main reason for MIT in this system is most likely the presence of strong electron-electron correlation between multiple electrons at the Re site, which is caused by the mismatch of the Re ionic radius and change in the crystal structure across MIT. Another issue which has been extensively investigated in this thesis is phase separation in manganites presented in Chapter 6. We use a spatially resolved, direct spectroscopic probe for electronic structure with an additional unique sensitivity to chemical compositions, to investigate high quality single crystal samples of La1/4Pr3/8Ca3/8MnO3 in the first section. This unique probe establishes the formation of distinct insulating domains embedded in the metallic host at low temperatures, significantly in the absence of any perceptible chemical inhomogeneity, with the domain-size at least an order of magnitude larger than the previous largest estimate. We also provide compelling evidence of memory effects in such domain formation and morphology, suggesting an intimate connection between these electronic domains and long-range strains, often thought to be an important ingredient in the physics of doped manganites. In second part of this chapter we discuss another system namely Eu0.5Y0.5MnO3 which undergoes a chemical phase separation forming alternate stripes of Eu rich (Y deficient) orthorhombic phase and Y rich (Eu deficient) hexagonal phases. These stripes are amazingly straight and run parallel over millimeters. One more system that we investigated is a mixture of ferromagnetic La5/8Sr3/8MnO3and insulating ferroelectric LuMnO3 taken in ratio 3:7, here too the attempt to make a single crystal resulted into a chemical phase separation forming strips of metallic La5/8Sr3/8MnO3and insulating LuMnO3 throughout the sample surface. Preliminary studies suggests that strain between the chemically and crystallographically different species may result into such interesting morphology. In Chapter 7 we study pseudo-one dimensional compounds Sr3CuIrO6 and Sr3ZnIrO6 using photo electron spectroscopy. The experimental results were fitted using band structure calculations with Full Potential Linearized Augmented Plane Wave (FP-LAPW) method.

In zunehmendem Maße werden Kraftfahrzeuge mit Sensoren zur Erfassung des Fahrzeugniveaus, also der Lage des Fahrzeugs relativ zur Straßenoberfläche in Richtung der Fahrzeughochachse, ausgestattet. Informationen zum Fahrzeugniveau werden beispielsweise für die automatische Leuchtweitenregulierung für Gasentladungsscheinwerfer und Fahrwerkregelsysteme benötigt. Mit dem Ziel der Vermeidung wesentlicher Nachteile üblicher Seriensensoren mit Kugelgelenken wurde von der ZF Lemförder Fahrwerktechnik GmbH &amp;amp; Co. KG in Zusammenarbeit mit der Volkswagen AG und der Technischen Universität Dresden ein Fahrzeugniveausensor prototypisch in ein Gummi-Metall-Lager eines Fahrwerklenkers integriert. In diesem mechatronischen System wird mit anisotropen magnetoresistiven (AMR) Sensoren, welche in den Lagerkern integriert sind, die Richtung des Magnetfeldes eines auf der Innenseite der äußeren Lagerhülse angeordneten Perma¬nentmagnetrings gemessen. Ein spezielles Design von Mechanik und Magnetfeld erlaubt die Messung der Lagertorsion als Maß für den vertikalen Radweg des entsprechenden Rades weitgehend unabhängig von kardanischen und translatorischen Lagerverformungen. Diese Dissertation stellt eine Zusammenfassung wesentlicher Inhalte dieses Projektes dar. Einleitend wird die Eignung von Messgröße und Sensorprinzip für die Messung des Fahrzeugniveaus anhand der Anforderungen an Fahrzeugniveausensoren diskutiert und ein optimierter mechanischer Aufbau des Sensorlagers vorgestellt. Den wissenschaftlichen Schwerpunkt dieser Dissertation bildet das Design des Magnetfeldes des erforderlichen Permanentmagneten. Auf der Basis geeigneter Ansätze erfolgt unter Anwendung der Theorie magnetischer Felder die Herleitung eines Feldverlaufs, der ein Optimum hinsichtlich der Unempfindlichkeit gegenüber der sensorischen Erfassung störender Lagerverformungen, der erreichbaren Feldstärke am Sensor, der Signallinearität und der Herstellbarkeit des Permanentmagnetrings darstellt. Zu den weiteren Themen dieser Arbeit zählen die Erörterung der verwendeten Sensorelektronik einschließlich der wesentlichen Software¬algorithmen sowie die Diskussion der experimentell ermittelten Eigenschaften eines Prototyps des Sensorlagers und dessen Komponenten. / In motor vehicles, information on the position of the vehicle in direction of the vehicle height axis in relation to the road surface is increasingly provided by sensors. This positional information is required for the automatic headlight range control of gaseous discharge headlights and chassis control systems. In cooperation with Volkswagen AG and University of Technology Dresden, ZF Lemförder Fahrwerktechnik GmbH &amp;amp; Co. KG integrated a vehicle height sensor as a prototype in a rubber mount of an axle link with the aim of avoiding the disadvantages of standard sensors using ball joints. In this mechatronic system, the direction of the magnetic field of a permanent magnetic ring placed on the inside of the outer bearing case is measured by anisotropic magnetoresistive (AMR) sensors integrated in the centre of the bearing. The vertical movement of the relevant wheel is measured via the torsion of the rubber mount. The mechanics and the magnetic field were designed in order to get measurements that are not affected by rotational and linear rubber mount distortions. This thesis works summarizes the key points of this project. The reader will be first introduced to advantages and disadvantages of the measuring quantity and the sensor principle used for measuring the positioning of the vehicle concerning the requirements of vehicle height sensors. In addition, an optimized construction of the sensor rubber mount will be described. The main focus of this work is the design of the magnetic field of the required permanent magnet. While considering adequate approaches, the magnetic field of this magnet is formulated from the theory of magnetic fields. The presented magnetic field is an optimisation in terms of the insensitivity of sensoric measurements towards interferic rubber mount distortions, the field force that can be accomplished at the sensor, the linearity of the signal and the producibility of the permanent magnet ring. Further topics that are addressed in this thesis are the discussion of the used sensor electronic including essential software algorithms and the discussion of the experimentally derived characteristics of the prototype of the sensor rubber mount and its components.

Advanced scanning magnetoresistive microscopy (SMRM) — a robust magnetic imaging and probing technique — is presented. It utilizes conventional recording heads of a hard disk drive as sensors. The spatial resolution of modern tunneling magnetoresistive sensors is nowadays comparable with more commonly used magnetic force microscopes. Important advantages of SMRM are the ability to detect pure magnetic signals directly proportional to the out-of-plane magnetic stray field, negligible sensor stray fields, and the ability to apply local bipolar magnetic field pulses up to 10 kOe with bandwidths from DC up to 1 GHz. The performance assessment of this method and corresponding best practices are discussed in the first section of this work. An application example of SMRM, the study on chemically ordered L10 FePt is presented in a second section. A constructed heater unit of SMRM opens the path to investigate temperature-dependent magnetic properties of the medium by recording and imaging at elevated temperatures. L10 FePt is one of the most promising materials to reach limits in storage density of future magnetic recording devices based on heat-assisted magnetic recording (HAMR). In order to be implemented in an actual recording scheme, the medium Curie temperature should be lowered. This will reduce the power requirements, and hence, wear and tear on a heat source — integrated plasmonic antenna. It is expected that the exchange coupling of FePt to thin Fe layers provides high saturation magnetization and elevated Curie temperature of the composite. The addition of Cu allows adjusting the magnetic properties such as perpendicular magnetic anisotropy, coercivity, saturation magnetization, and Curie temperature. This should lead to a lowering of the switching field of the hard magnetic FeCuPt layer and a reduction of thermally induced recording errors. In this regard, the influence of the Fe layer thickness on the switching behavior of the hard layer was investigated, revealing a strong reduction for Fe layer thicknesses larger than the exchange length of Fe. The recording performance of single-layer and bilayer structures was studied by SMRM roll-off curves and histogram methods at temperatures up to 180 °C In the last section of this work, SMRM advantages are demonstrated by various experiments on a two-dimensional magnetic vortex lattice. Magnetic vortex is a peculiar complex magnetization configuration which typically appears in a soft magnetic structured materials. It consists of two coupled sub-systems: the core, where magnetization vector points perpendicular to the structure plane, and the curling magnetization where magnetic flux is rotating in-plane. The unique properties of a magnetic vortex making it an object of a great research and technological interest for spintronic applications in sensorics or data storage. Manipulation of the vortex core as well as the rotation sense by applying a local field pulse is shown. A spatially resolved switching map reveals a significant "write window" where vortex cores can be addressed correctly. Moreover, the external in-plane magnet extension unit allow analyzing the magnetic vortex rotational sense which is extremely practical for magnetic coupling investigations of magnetic coupling phenomena.

In zunehmendem Maße werden Kraftfahrzeuge mit Sensoren zur Erfassung des Fahrzeugniveaus, also der Lage des Fahrzeugs relativ zur Straßenoberfläche in Richtung der Fahrzeughochachse, ausgestattet. Informationen zum Fahrzeugniveau werden beispielsweise für die automatische Leuchtweitenregulierung für Gasentladungsscheinwerfer und Fahrwerkregelsysteme benötigt. Mit dem Ziel der Vermeidung wesentlicher Nachteile üblicher Seriensensoren mit Kugelgelenken wurde von der ZF Lemförder Fahrwerktechnik GmbH &amp;amp; Co. KG in Zusammenarbeit mit der Volkswagen AG und der Technischen Universität Dresden ein Fahrzeugniveausensor prototypisch in ein Gummi-Metall-Lager eines Fahrwerklenkers integriert. In diesem mechatronischen System wird mit anisotropen magnetoresistiven (AMR) Sensoren, welche in den Lagerkern integriert sind, die Richtung des Magnetfeldes eines auf der Innenseite der äußeren Lagerhülse angeordneten Perma¬nentmagnetrings gemessen. Ein spezielles Design von Mechanik und Magnetfeld erlaubt die Messung der Lagertorsion als Maß für den vertikalen Radweg des entsprechenden Rades weitgehend unabhängig von kardanischen und translatorischen Lagerverformungen. Diese Dissertation stellt eine Zusammenfassung wesentlicher Inhalte dieses Projektes dar. Einleitend wird die Eignung von Messgröße und Sensorprinzip für die Messung des Fahrzeugniveaus anhand der Anforderungen an Fahrzeugniveausensoren diskutiert und ein optimierter mechanischer Aufbau des Sensorlagers vorgestellt. Den wissenschaftlichen Schwerpunkt dieser Dissertation bildet das Design des Magnetfeldes des erforderlichen Permanentmagneten. Auf der Basis geeigneter Ansätze erfolgt unter Anwendung der Theorie magnetischer Felder die Herleitung eines Feldverlaufs, der ein Optimum hinsichtlich der Unempfindlichkeit gegenüber der sensorischen Erfassung störender Lagerverformungen, der erreichbaren Feldstärke am Sensor, der Signallinearität und der Herstellbarkeit des Permanentmagnetrings darstellt. Zu den weiteren Themen dieser Arbeit zählen die Erörterung der verwendeten Sensorelektronik einschließlich der wesentlichen Software¬algorithmen sowie die Diskussion der experimentell ermittelten Eigenschaften eines Prototyps des Sensorlagers und dessen Komponenten. / In motor vehicles, information on the position of the vehicle in direction of the vehicle height axis in relation to the road surface is increasingly provided by sensors. This positional information is required for the automatic headlight range control of gaseous discharge headlights and chassis control systems. In cooperation with Volkswagen AG and University of Technology Dresden, ZF Lemförder Fahrwerktechnik GmbH &amp;amp; Co. KG integrated a vehicle height sensor as a prototype in a rubber mount of an axle link with the aim of avoiding the disadvantages of standard sensors using ball joints. In this mechatronic system, the direction of the magnetic field of a permanent magnetic ring placed on the inside of the outer bearing case is measured by anisotropic magnetoresistive (AMR) sensors integrated in the centre of the bearing. The vertical movement of the relevant wheel is measured via the torsion of the rubber mount. The mechanics and the magnetic field were designed in order to get measurements that are not affected by rotational and linear rubber mount distortions. This thesis works summarizes the key points of this project. The reader will be first introduced to advantages and disadvantages of the measuring quantity and the sensor principle used for measuring the positioning of the vehicle concerning the requirements of vehicle height sensors. In addition, an optimized construction of the sensor rubber mount will be described. The main focus of this work is the design of the magnetic field of the required permanent magnet. While considering adequate approaches, the magnetic field of this magnet is formulated from the theory of magnetic fields. The presented magnetic field is an optimisation in terms of the insensitivity of sensoric measurements towards interferic rubber mount distortions, the field force that can be accomplished at the sensor, the linearity of the signal and the producibility of the permanent magnet ring. Further topics that are addressed in this thesis are the discussion of the used sensor electronic including essential software algorithms and the discussion of the experimentally derived characteristics of the prototype of the sensor rubber mount and its components.

CubeSat missions needs components that are tolerant against the radiation in space. The hardware components must be reliable, and it must not compromise the functionality on-board during the mission. At the same time, the cost of hardware and its development should not be high. Hence, this thesis discusses the design and development of a CubeSat architecture using a Commercial Off-The- Shelf (COTS) Multi-Processor System on Chip (MPSoC). The architecture employs an affordable Rad-Hard Micro-Controller Unit as a Supervisor for the MPSoC. Also, it uses several radiation mitigation techniques such as the Latch-up protection circuit to protect it against Single-Event Latch-ups (SELs), Readback scrubbing for Non- Volatile Memories (NVMs) such as NOR Flash and Configuration scrubbing for the FPGA present in the MPSoC to protect it against Single-Event Upset (SEU)s, reliable communication using Cyclic Redundancy Check (CRC) and Space packet protocol. Apart from such functionalities, the Supervisor executes tasks such as Watchdog that monitors the liveliness of the applications running in the MPSoC, data logging, performing Over-The-Air Software/Firmware update. The thesis work implements functionalities such as Communication, Readback memory scrubbing, Configuration scrubbing using SEM-IP, Watchdog, and Software/Firmware update. The execution times of the functionalities are presented for the application done in the Supervisor. As for the Configuration scrubbing that was implemented in Programmable Logic (PL)/FPGA, results of area and latency are reported. / CubeSat-uppdrag behöver komponenter som är toleranta mot strålningen i rymden. Maskinvarukomponenterna måste vara pålitliga och funktionaliteten ombord får inte äventyras under uppdraget. Samtidigt bör kostnaden för hårdvara och dess utveckling inte vara hög. Därför diskuterar denna avhandling design och utveckling av en CubeSatarkitektur med hjälp av COTS (eng. Custom-off-The-Shelf) MPSoC (eng. Multi Processor System-on-Chip). Arkitekturen använder en prisvärd strålningshärdad (eng. Rad-Hard) Micro-Controller Unit(MCU) som Övervakare för MPSoC:en och använder också flera tekniker för att begränsa strålningens effekter såsom kretser för att skydda kretsen från s.k. Single Event Latch-Ups (SELs), återläsningsskrubbning för icke-volatila minnen (eng. Non-Volatile Memories) NVMs som NOR Flash och skrubbning av konfigurationsminnet skrubbning för FPGA:er i MPSoC:en för att skydda dem mot Single-Event Upsets (SEUs), och tillhandahålla pålitlig kommunikation mha CRC och Space Packet Protocol. Bortsett från sådana funktioner utför Övervakaren uppgifter som Watchdog för att övervaka att applikationerna som körs i MPSoC:en fortfarande är vid liv, dataloggning, och Over- the-Air-uppdateringar av programvaran/Firmware. Examensarbetet implementerar funktioner såsom kommunikation, återläsningsskrubbning av minnet, konfigurationsminnesskrubbning mha SEM- IP, Watchdog och uppdatering av programvara/firmware. Exekveringstiderna för utförandet av funktionerna presenteras för den applikationen som körs i Övervakaren. När det gäller konfigurationsminnesskrubbningen som implementerats i den programmerbara logiken i FPGA:n, rapporteras area och latens.