Subsolidus phase relations and crystal structures in the Pr1+xBa2-xCu3O7 +/-delta system at 950 degrees C

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	Subsolidus phase relations and crystal structures in the Pr1+xBa2-xCu3O7 +/-delta system at 950 degrees C
	G. B. Song; J. K. Liang; F. S. Liu; L. T. Yang; J. Luo; G. H. Rao
	2004
发表期刊	Powder Diffraction
ISSN	0885-7156
卷号	19 期号:4 页码:320-324
摘要	Pr1+xBa2-xCu3O7+/-delta solid solution was investigated by means of X-ray powder diffraction and Rietveld analysis. Single-phase PrBa2Cu3O7+/-delta (Pr123) can be synthesized under a Pr-rich condition by sintering at 950 degreesC in air. The solubility of Pr1+xBa2-xCu3O7+/-delta solid solution is 0.08less than or equal tox less than or equal to0.80. The structure of Pr1+xBa2-xCu3O7+/-delta is orthorhombic for 0.08less than or equal tox<0.30, and transforms into tetragonal for 0.30less than or equal toxless than or equal to0.80. To form single-phase Pr123, the Ba sites in the Pr123 structure are partially occupied by excess Pr ions, and the smallest amount of excess Pr is x=0.08. Meanwhile, all Ba ions stay in the Ba sites. (C) 2004 International Centre for Diffraction Data.
部门归属	sw univ sci & technol, sch mat sci & engn, mianyang 621002, peoples r china. chinese acad sci, inst phys, beijing 100080, peoples r china. chinese acad sci, ctr condensed matter phys, beijing 100080, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;song, gb (reprint author), sw univ sci & technol, sch mat sci & engn, mianyang 621002, peoples r china;gbsong931@yahoo.com.cn
关键词	Pr123 Solid Solution Ionic Radius Chemical Property Substitution o System Superconductivity Diagram Growth Prba2cu3o7-delta Pr
URL	查看原文
WOS记录号	WOS:000225852200002
引用统计	被引频次：1[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/321006/35550
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,F. S. Liu,et al. Subsolidus phase relations and crystal structures in the Pr1+xBa2-xCu3O7 +/-delta system at 950 degrees C[J]. Powder Diffraction,2004,19(4):320-324.
APA	G. B. Song,J. K. Liang,F. S. Liu,L. T. Yang,J. Luo,&G. H. Rao.(2004).Subsolidus phase relations and crystal structures in the Pr1+xBa2-xCu3O7 +/-delta system at 950 degrees C.Powder Diffraction,19(4),320-324.
MLA	G. B. Song,et al."Subsolidus phase relations and crystal structures in the Pr1+xBa2-xCu3O7 +/-delta system at 950 degrees C".Powder Diffraction 19.4(2004):320-324.