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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
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Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 1 to 10 of 28 (0.015 seconds)| 1 |
Neutron scattering investigation of frustrated magnetsFennell, Tom January 2003 (has links)
No description available.
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Magnetization reversal processes in 'bottom-up' and 'top-down' magnetic structuresGoncharov, Alexander January 2005 (has links)
No description available.
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Vanishing magnetostriction amorphous alloy wires for sensor applicationsConfalonieri, Giovanni A. Badini January 2004 (has links)
No description available.
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Magnetic structures produced by the fluctuation dynamoWilkin, Samantha Louise January 2006 (has links)
No description available.
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Theory and design of intraband quantum cascade structures in a magnetic fieldSavicÌ, Ivana January 2006 (has links)
No description available.
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Magnetism and the magnetic excitations of charge ordered La_(₂_-_x_)Sr_(_x_)NiO_(₄₊_δ_)Freeman, Paul Gregory January 2005 (has links)
No description available.
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Neutron scattering studies and classical simulations on low-dimensional spin systemsHuberman, Tom January 2004 (has links)
No description available.
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Muon-spin relaxation and its application to magnetic systems of differing dimensionalityLancaster, Tom January 2004 (has links)
No description available.
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Spin correlations in frustrated magnets with orbital orderingMagee, Andrea January 2012 (has links)
The magnetism of two model systems that undergo orbital ordering transitions, MnV204 and GdV03, has been studied using neutron scattering and synchrotron x-rays. Mn V 204 comprises a network of corner-sharing tetrahedra with the vanadium ions forming a pyrochlore lattice. This structure is typical of systems that are geometrically frustrated in three dimensions. In the case of MnV204, the V3+ 3d electrons occupy two out of three t2g orbitals and, therefore, the orbital degrees of freedom come into play. The presence of the magnetic Mn2+ ions leads to ferrimagnetic structures, allowing the possibility to control the orbital ordering. The low temperature Mn V 204 magnetic structure and phase diagram were de- termined using single-crystal neutron diffraction. The magnetic excitations in the low temperature phases were studied using inelastic neutron scattering. The rotation method was employed on MAPS to obtain four-dimensional volumes of reciprocal space. Unidirectional polarization analysis was employed on IN20 to 3 Abstract focus on details of the magnetic dispersion with great sensitivity. The previously published magnetic exchange model was unable to account for our data and a new model is proposed. This magnetic exchange model distinguishes between the two candidate orbital ordering models. The perovskite orthovanadates, RV03 (R = rare earth or V), display a vari- ety of commensurate magnetic structures. Until now the magnetic structure of GdV03 had not been determined by neutron diffraction due to strong absorp- tion at thermal wavelengths. Magnetisation measurements for GdV03 reveal an unusual magnetic memory effect and a series of magnetic-field-induced phase tran- sitions at low temperature. We have studied the complex magnetic ordering in GdV03 using hot neutrons on D9 at ILL and resonant x-ray scattering on ID20 at ESRF. We have deter- mined new magnetic structures in the rich magnetic phase diagram of GdV03 at low temperature, which we find to be comprised of incommensurate orderings of gadolinium moments. 4
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Investigations in modelling magnetostriction by the TLM methodHolley, Steven Keith January 2007 (has links)
No description available.
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