Crystal structure and spin reorientation transition of Tb1?xYxFe11Mo compounds
作者： Y G Xiao , G H Rao , Q Zhang , G Y Liu , Y Zhang
DOI: 10.1088/0022-3727/39/4/003
关键词: Atomic radius 、 Chemistry 、 Magnetic anisotropy 、 Tetragonal crystal system 、 Curie temperature 、 Anisotropy 、 Condensed matter physics 、 Magnetocrystalline anisotropy 、 Phase transition 、 Spin crossover
摘要: The structural and magnetic properties of mixed compounds Tb1-xYxFe11Mo with x = 0-1.0 have been investigated by means x-ray diffraction measurements. crystallize in the tetragonal ThMn12-type structure space group I4/mmm. lattice parameters a, c unit-cell volume V vary slightly Y content, since atomic radius is close to that Th. Curie temperature increases for <= 0. 1, then decreases increase concentration. Spin reorientation phenomena studied detail. room easy-magnetization direction changes from planar c-axial increasing Variation anisotropy constants Fe-sublattice K-1(Fe) (T) determined experimentally. By minimizing magnetocrystalline energy, derived spin system shows reasonable agreement observations.
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