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题名: Crystallographic and magnetic properties of hydride R3Fe29-xTxHy (R=Y, Ce, Nd, Sm, Gd, Tb and Dy; T=V and Cr)
作者: Han XF;  Lin LY;  Baggio-Saitovitch E;  Xu RG;  Wang XH;  Pan HG
发表日期: 1999
摘要: The crystallographic and intrinsic magnetic properties of hydride R3Fe29-xTxHy (R=Y, Ce, Nd, Sm, Gd, Tb, and Dy; T=V and Cr) have been investigated. The lattice constants and the unit cell volume of R3Fe29-xTxHy decrease with increasing R atomic number from Nd to Dy, except for Ce, reflecting the lanthanide contraction. Regular anisotropic expansions, mainly along the a- and b-axis rather than along the c-axis, are observed for all the compounds upon hydrogenation. Hydrogenation leads to an increase in Curie temperature. First-order magnetization processes (FOMP) occur in magnetic fields of around 1.5 T and 4.0 T at 4.2 K for Nd3Fe24.5Cr4.5H5.0 and Tb(3)Fc(27.0)Cr(2.0)H(2.8), and around 1.4 T at room temperature for Gd3Fe28.0Cr1.0H4.2 Abnormal crystallographic and magnetic properties of Ce3Fe29-xTxHy suggest that the Ce ion is non-triply ionized.
KOS主题词: Magnetic properties;  Hydrides;  Hydrogenation;  saturation magnetization;  Curie temperature
刊名: MAGNETISM MAGNETIC MATERIALS AND THEIR APPLICATIONS
专题: 中国科学院半导体研究所(2009年前)_期刊论文

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Han XF; Lin LY; Baggio-Saitovitch E; Xu RG; Wang XH; Pan HG .Crystallographic and magnetic properties of hydride R3Fe29-xTxHy (R=Y, Ce, Nd, Sm, Gd, Tb and Dy; T=V and Cr) ,MAGNETISM MAGNETIC MATERIALS AND THEIR APPLICATIONS,1999,302-3(0):294-298
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