Crystal structure and magnetic properties Nd(4)Ga(2)O(9) and Sm(4)Ga(2)O(9)

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	Crystal structure and magnetic properties Nd(4)Ga(2)O(9) and Sm(4)Ga(2)O(9)
	F. S. Liu; Q. L. Liu; J. K. Liang; G. B. Song; J. Luo; L. T. Yang; Y. Zhang; G. H. Rao
	2004
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	381 期号:1-2 页码:26-31
摘要	The crystal structures of Nd(4)Ga(2)O(9) and Sm(4)Ga(2)O(9) compounds synthesized by solid-state reaction at 1400degreesC are investigated. X-ray diffraction shows that Nd(4)Ga(2)O(9) and Sm(4)Ga(2)O(9) are monoclinic system with the space group P2(1)/c, and lattice parameters a = 7.7656(1) Angstrom, b = 10.9689(1) Angstrom, c = 11.4727(1) Angstrom, beta = 109.06(1)degrees for Nd(4)Ga(2)O(9), and a = 7.6613(1) Angstrom, b = 10.8546(1) Angstrom, c = 11.4080(1) Angstrom, beta = 108.80(1)degrees for Sm(4)Ga(2)O(9). The gallium atoms are in the center of distorted oxygen tetrahedra with an average Ga-O bond distance between 1.82 and 1.85 Angstrom. The rare earth atoms are sixfold or sevenfold coordinated by oxygen. The oxygen atoms are threefold and fourfold coordinated. The magnetization for these compounds clearly reflects paramagnetism. The magnetic susceptibility chi changes with temperature in a Curie-type manner. (C) 2004 Elsevier B.V All rights reserved.
部门归属	chinese acad sci, inst phys, beijing 100080, peoples r china. sw univ sci & technol, coll mat sci & engn, mianyang 621002, peoples r china. acad sinica, int ctr mat phys, shenyang 110016, peoples r china.;liu, fs (reprint author), chinese acad sci, inst phys, pob 603, beijing 100080, peoples r china;fsliu@aphy.iphy.ac.cn
关键词	Nd(4)Ga(2)o(9) Sm(4)Ga(2)o(9) Crystal Structure Rietveld Refinement X-ray Diffraction Garnets
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/35450
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	F. S. Liu,Q. L. Liu,J. K. Liang,et al. Crystal structure and magnetic properties Nd(4)Ga(2)O(9) and Sm(4)Ga(2)O(9)[J]. Journal of Alloys and Compounds,2004,381(1-2):26-31.
APA	F. S. Liu.,Q. L. Liu.,J. K. Liang.,G. B. Song.,J. Luo.,...&G. H. Rao.(2004).Crystal structure and magnetic properties Nd(4)Ga(2)O(9) and Sm(4)Ga(2)O(9).Journal of Alloys and Compounds,381(1-2),26-31.
MLA	F. S. Liu,et al."Crystal structure and magnetic properties Nd(4)Ga(2)O(9) and Sm(4)Ga(2)O(9)".Journal of Alloys and Compounds 381.1-2(2004):26-31.