Crystallographic and magnetic properties of hydride R3Fe29-xTxHy (R=Y, Ce, Nd, Sm, Gd, Tb and Dy; T=V and Cr)

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	Crystallographic and magnetic properties of hydride R3Fe29-xTxHy (R=Y, Ce, Nd, Sm, Gd, Tb and Dy; T=V and Cr)
	Han XF; Lin LY; Baggio-Saitovitch E; Xu RG; Wang XH; Pan HG; Han XF Chinese Acad Sci Inst Semicond Ctr Mat Sci POB 912 Beijing 100083 Peoples R China.
	1999
会议名称	4th Latin American Workshop on Magnetism, Magnetic Materials and Their Applications
会议录名称	MAGNETISM, MAGNETIC MATERIALS AND THEIR APPLICATIONS, 302-3
页码	294-298
会议日期	JUN 07-11, 1998
会议地点	SAO PAULO, BRAZIL
出版地	BRANDRAIN 6, CH-8707 ZURICH-UETIKON, SWITZERLAND
出版者	TRANSTEC PUBLICATIONS LTD
ISSN	0255-5476
ISBN	0-87849-827-3
部门归属	chinese acad sci, inst semicond, ctr mat sci, beijing 100083, peoples r china; ctr brasileiro pesquisas fis, rio de janeiro, brazil; zhejiang univ, dept mat, hangzhou 310027, peoples r china
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.
关键词	Magnetic Properties Hydride Hydrogenation Saturation Magnetization Curie Temperature First-order Magnetization Process R3fe29-xtxhy r = y
学科领域	半导体材料
主办者	Fundacao Amparo Pesquisa Estado Sao Paulo.; Conselho Nacl Desenvolvimento Cient & Tecnologico.; Coordenadoria Aperfeicoamento Pessoal Nivel Super.; Universidad Sao Paulo, Pro Reitoria Pesquisa.; Centro Latino Americano Fis.; Int Ctr Theoret Phys.; Int Union Crystallog.; CGA Analit.
收录类别	CPCI-S
语种	英语
文献类型	会议论文
条目标识符	http://ir.semi.ac.cn/handle/172111/15021
专题	中国科学院半导体研究所（2009年前）
通讯作者	Han XF Chinese Acad Sci Inst Semicond Ctr Mat Sci POB 912 Beijing 100083 Peoples R China.
推荐引用方式 GB/T 7714	Han XF,Lin LY,Baggio-Saitovitch E,et al. Crystallographic and magnetic properties of hydride R3Fe29-xTxHy (R=Y, Ce, Nd, Sm, Gd, Tb and Dy; T=V and Cr)[C]. BRANDRAIN 6, CH-8707 ZURICH-UETIKON, SWITZERLAND:TRANSTEC PUBLICATIONS LTD,1999:294-298.

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