Subsolidus phase relation and crystal structure of the PrBa(2-x)Sr(x)Cu(3)O(7 +/-delta) system

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	Subsolidus phase relation and crystal structure of the PrBa(2-x)Sr(x)Cu(3)O(7 +/-delta) system
	G. B. Song; J. K. Liang; L. T. Yang; Q. L. Liu; G. Y. Liu; H. F. Yang; G. H. Rao
	2004
发表期刊	Journal of Alloys and Compounds
ISSN	0925-8388
卷号	370 期号:1-2 页码:302-306
摘要	The PrBa(2-x)Sr(x)Cu(3)O(7+/-delta) solid solution was investigated by means of X-ray powder diffraction in combination with Rietveld analysis. The Sr-doped Pr123 single phase could be synthesized at 950degreesC in air. The solubility of PrBa(2-x)Sr(x)Cu(3)O(7+/-delta) solid solution is 0.2 less than or equal to x less than or equal to 0.6. The structure of PrBa(2-x)Sr(x)Cu(3)O(7+/-delta) is orthorhombic for x = 0.2. The structure transforms into tetragonal for 0.3 less than or equal to x less than or equal to 0.6. In the PrBa(2-x)Sr(x)Cu(3)O(7+/-delta) structure, Sr ions can replace Ba ions, the highest value is x = 0.6 under our experimental condition. But Sr ions could not replace Pr ions. Furthermore Pr ions could not occupy the sites of Ba ions in the PrBa(2-x)Sr(x)Cu(3)O(7+/-delta) system. Both ionic radii and chemical properties play an important role in the mutual substitution of Pr, Ba and Sr ions in the Pr123 structure of the PrBa(2-x)Sr(x)Cu(3)O(7+/-delta) system. (C) 2003 Elsevier B.V. All rights reserved.
部门归属	chinese acad sci, inst phys, beijing 100080, peoples r china. chinese acad sci, ctr condensed mat phys, beijing 100080, peoples r china. sw univ sci & technol, sch mat sci & engn, mianyang 621002, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;song, gb (reprint author), chinese acad sci, inst phys, pob 603, beijing 100080, peoples r china;gbsong@aphy.iphy.ac.cn
关键词	Pr123 Solid Solution Ionic Radius Chemical Property Substitution High-pressure Synthesis Magnetic-properties Rare-earth Ba-site Superconductivity Restitution Transport
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/35551
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. B. Song,J. K. Liang,L. T. Yang,et al. Subsolidus phase relation and crystal structure of the PrBa(2-x)Sr(x)Cu(3)O(7 +/-delta) system[J]. Journal of Alloys and Compounds,2004,370(1-2):302-306.
APA	G. B. Song.,J. K. Liang.,L. T. Yang.,Q. L. Liu.,G. Y. Liu.,...&G. H. Rao.(2004).Subsolidus phase relation and crystal structure of the PrBa(2-x)Sr(x)Cu(3)O(7 +/-delta) system.Journal of Alloys and Compounds,370(1-2),302-306.
MLA	G. B. Song,et al."Subsolidus phase relation and crystal structure of the PrBa(2-x)Sr(x)Cu(3)O(7 +/-delta) system".Journal of Alloys and Compounds 370.1-2(2004):302-306.