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Plonųjų manganitų sluoksnių tyrimas stipriuose impulsiniuose elektriniuose ir magnetiniuose laukuose / Investigation of thin manganite films at strong pulsed electric and magnetic fields

The main aim of this work was to investigate electrical conductivity of La-Ca(Sr)-MnO thin films at high pulsed electric and magnetic fields and to clear up the possibilities to use these materials for high pulsed magnetic field sensor and fault current limiter applications.
The dissertation consists of the preface, six chapters, summary and main conclusions, references, list of publications and abstract (in Lithuanian).
The main objectives of the work, scientific novelty, goals, validation of results, and statements for defense are presented in the preface.
Chapter 1 presents an introduction and review of previous works on electroresistance (ER) and magnetoresistance (MR) phenomena in manganites.
Chapter 2 presents a description of two deposition techniques which were used for preparation of thin manganite films: metal organic chemical vapour deposition (MOCVD) and pulsed laser deposition (PLD).
Measurement equipment and methods are described in Chapter 3. The resistance dependence on voltage was investigated using electric pulses with duration of 5–30 ns and amplitude up to 1000 V in the temperature range of 4.2–300 K. For magnetoresistance measurements a pulsed magnetic field generator, which generates magnetic field pulses of 0.6–2 ms duration with amplitude up to 50 T was used.
Chapter 4 presents an investigation of surface morphology of prepared films and a characterization of their properties at low electric and magnetic fields. The electric and magnetic properties... [to full text]

Identiferoai:union.ndltd.org:LABT_ETD/oai:elaba.lt:LT-eLABa-0001:E.02~2006~D_20061003_100516-61918
Date03 October 2006
CreatorsCimmperman, Piotras
ContributorsArlauskas, Kęstutis, Šatkovskis, Eugenijus, Žurauskienė, Nerija, Laurinavičius, Albertas, Tamulevičius, Sigitas, Ašmontas, Steponas, Babonas, Gintautas Jurgis, Audzijonis, Algirdas, Vilnius Gediminas Technical University
PublisherLithuanian Academic Libraries Network (LABT), Vilnius Gediminas Technical University
Source SetsLithuanian ETD submission system
LanguageEnglish
Detected LanguageEnglish
TypeDoctoral thesis
Formatapplication/pdf
Sourcehttp://vddb.library.lt/obj/LT-eLABa-0001:E.02~2006~D_20061003_100516-61918
RightsUnrestricted

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