Structural and Magnetic Properties of (Nd1-xYx)3Fe27.31Ti1.69 Compounds

Abstract

Abstract: The structure and magnetic properties of Nd_1-xY_x)₃Fe_27.31Ti_1.69(0≤x≤0.6) compounds have been investigated by means of X-ray diffraction and magnetic measurements. It was found that all the compounds investigated crystallize in Nd₃(Fe,Ti) 29-type structure with space group A2/m. With increasing Y content x, the lattice constants and the unit-cell volume decrease monotonically and the Curie temperature T_c reduces slightly. The saturation magnetization M s decreases monotonically with increasing x, which is in good agreement with that expected by a simple dilution model. All the compounds show a spin reorientation at low temperatures and the spin reorientation temperature T_sr decreases with increasing x from²32 K(for x=0) to 121 K(for x=0 6). Based on investigation of magnetocrystalline anisotropy, a tentative spin phase diagram has been constructed for the (Nd_1-xY_x) 3Fe 27.31Ti 1.69(0≤x≤0 6) compounds.

Key words: Compounds, Curie temperature, Magnetocrystalline anisotropy

CLC Number:

O614.33

TrendMD:

WANG Wen-Quan, ZHANG Xi-Feng, SU Feng, WANG Xiang-Qun, DU Xiao-Bo, JIN Han-Min, YANG Fu-Ming, WU Guang-Heng . Structural and Magnetic Properties of (Nd_1-xY_x)₃Fe_27.31Ti_1.69 Compounds[J]. Chem. J. Chinese Universities, 2003, 24(1): 13.

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Structural and Magnetic Properties of (Nd_1-xY_x)₃Fe_27.31Ti_1.69 Compounds

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