Structure and Magnetic Properties of Compounds YCo12-xTix and YFe12-xTix

Abstract

Abstract: Structure and magnetic properties of YCo_12-xTi_x and YFe_12-xTi_x compounds have been investigated by using X-ray diffraction and magnetic measurements. It was found that all compounds investigated are almost single phase with the ThMn 12-type structure. X-ray diffraction patterns of magnetically aligned powder samples indicate that the easy magnetization directions(EMD) of YCo_12-xTi_x and YFe_12-xTi_x compounds are along the c-axis at room temperature. The lattice parameters increase monotonically with increasing Ti component for all the compounds investigated. The Curie temperature T c decreases monotonically with increasing Ti component for YCo_12-xTi_x, while T_c of YFe_12-xTi_x is almost independent of Ti component. The saturation magnetization M s decreases with increasing Ti component for both systems. The anisotropy field H_a of YCo_12-xTi_x and YFe_12-xTi_x compounds decreases monotonically with increasing Ti component, which can be understood in terms of a two-sublattice model of anisotropy.

Key words: YCo_12-xTi_x, YFe_12-xTi_x, X-ray diffraction, Magnetocrystalline anisotropy

CLC Number:

O614

TrendMD:

WANG Wen-Quan, FU Quan, SU Feng, WANG Xue-Feng, YAN Yu, JIN Han-Min. Structure and Magnetic Properties of Compounds YCo_12-xTi_x and YFe_12-xTi_x[J]. Chem. J. Chinese Universities, 2003, 24(2): 288.

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Structure and Magnetic Properties of Compounds YCo_12-xTi_x and YFe_12-xTi_x

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