Structure and magnetic properties of nitrides R3Fe29-xCrxN4

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	Structure and magnetic properties of nitrides R3Fe29-xCrxN4
	Han, XF; Zan, YD; Wang, QY; Wang, J; Yang, FM; Ma, L
通讯作者	Han, XF()
	1998
发表期刊	ACTA PHYSICA SINICA-OVERSEAS EDITION
ISSN	1004-423X
卷号	7 期号:1 页码:38-46
摘要	A systematic investigation of nitrides R3F29-xCrxN4 (R = Y, Ce, Nd, Sm, Gd, Tb, and Dy) has been performed. The nitrogen concentration in the nitride R3Fe29-xCrxNy was determined to be y = 4. Nitrogenation leads to a relative volume expansion of about 5.3%. The lattice constants and unit cell volume decrease with increasing rare earth atomic number from Nd to Dy, reflecting the lanthanide contraction. In average, the increase of Curie temperature upon nitrogenation is about 200 K, compared with its parent compound. The nitrogenation also results in a remarkable improvement in the saturation magnetization and anisotropy fields for R3Fe29-x CrxN4 at 4.2 K and room temperature, compared with their parent compounds. A spin reorientation of Nd3Fe24.5Cr4.5N4 occurs at around 368 K, which is 138 K higher than that of Nd3F24.5Cr4.5. Magnetohistory effects of R3Fe29-xCrxN4 (R = Nd and Sm) are observed in a low field of 0.04 T. First-order magnetization process occurs in Sm3Fe24.0Cr5.0N4 in magnetic fields of around 3.0 T at 4.2 K. After nitrogenation the easy magnetization direction of Sm3Fe24.0C5.0 is changed from the easy-cone structure to the uniaxial. The excellent intrinsic magnetic properties of Sm3Fe24.0Cr5.0N4 make this compound a hopeful candidate for new high-performance permanent magnets.
收录类别	SCI
语种	英语
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000071322500005
出版者	GORDON BREACH SCI PUBL LTD
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/107926
专题	中国科学院金属研究所
通讯作者	Han, XF
作者单位	Acad Sinica, Inst Semicond, Ctr Mat Sci, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Han, XF,Zan, YD,Wang, QY,et al. Structure and magnetic properties of nitrides R3Fe29-xCrxN4[J]. ACTA PHYSICA SINICA-OVERSEAS EDITION,1998,7(1):38-46.
APA	Han, XF,Zan, YD,Wang, QY,Wang, J,Yang, FM,&Ma, L.(1998).Structure and magnetic properties of nitrides R3Fe29-xCrxN4.ACTA PHYSICA SINICA-OVERSEAS EDITION,7(1),38-46.
MLA	Han, XF,et al."Structure and magnetic properties of nitrides R3Fe29-xCrxN4".ACTA PHYSICA SINICA-OVERSEAS EDITION 7.1(1998):38-46.