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Magnetic, magnetotransport and magnetoelastic measurements performed using high magnetic fields

AuthorsAlgarabel, Pedro A.
Issue Date2012
CitationInternational Workshop Science and Technology at High Magnetic Fields (2012)
AbstractA summary of the different experiments performed by the magnetism group of the ICMA by using high magnetic fields will be presented. Magnetization measurements in Re-based double perovskites and in antiferromagnetic ReVO3 (Re= Y, Ho) single crystals will be reported. In the first case we will study the origin of the non-integer value of the saturation magnetization and in the second one we will report the temperature dependence of the spin-flop transitions observed in YVO3 and the magnetic structure deduced from the magnetization experiments for the Ho sublattice in HoVO3 compound. Regarding magnetotransport measurements magnetoresistance measurements up to 42 Tesla in cold-pressed Fe3O4 nanopowders and Hall-effect measurements up 30 Tesla in epitaxial thin films of Fe3O4 will be discussed. From these measurements the ordinary Hall effect contribution has been obtained and an effective electron density corresponding to 1 electron per f.u has been deduced. Finally we will report magnetostriction measurements performed in CaxSr2−xFeReO6 double perovskites studying the field-induced phase coexistence and in Co- and In- doped NiMnGa alloys in which we will discuss the structural (ΔV/V) effects related to the martensitic transformation presents in these compounds.
DescriptionResumen del trabajo presentado al: "International Workshop Science and Technology at High Magnetic Fields" celebrado en Miraflores de la Sierra (Madrid) del 6 al 9 de Noviembre de 2012.
Appears in Collections:(ICMA) Comunicaciones congresos
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