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Structure and magnetic properties of TbNiAl-based deuterides

机译:TbNiAl基氘化物的结构和磁性

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摘要

This work concerns the study of the crystal and magnetic structure of TbNiAlD_x compounds (x=0.54, 1.23 and 1.33) by neutron diffraction. TbNiAlD_(0.54) is isostructural with TbNiAl. It undergoes two magnetic transitions at T_1=16 K and T_N=36 K, with magnetic structure similar to that of TbNiAl below T_1=23 and T_N=45 K. TbNiAlD_(1.23) is in crystallography and magnetism comparable to TbNiAlD_(1.1). When the Tb_2NiAl positions are occupied, an orthorhombic distortion is induced. This completely changes the magnetic ordering and could be explained by the easy magnetization directions being perpendicular to the shortest Tb-Tb distances.
机译:这项工作涉及通过中子衍射研究TbNiAlD_x化合物(x = 0.54、1.23和1.33)的晶体和磁性结构。 TbNiAlD_(0.54)与TbNiAl同构。它在T_1 = 16 K和T_N = 36 K处经历了两次磁跃迁,其磁结构类似于T_1 = 23和T_N = 45 K时的TbNiAl的磁结构。TbNiAlD_(1.23)的晶体学和磁性与TbNiAlD_(1.1)相当。当Tb_2NiAl位置占据时,会引起正交畸变。这完全改变了磁有序性,并且可以通过垂直于最短Tb-Tb距离的易磁化方向来解释。

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