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PHASE-RELATIONSHIPS IN THE SM-BA-CU-O SYSTEM AT APPROXIMATELY 950-DEGREES-C

被引：26
作者：
CZERWONKA, J
EICK, HA
机构：
[1] MICHIGAN STATE UNIV,DEPT CHEM,E LANSING,MI 48824
[2] MICHIGAN STATE UNIV,CTR FUNDAMENTAL MAT RES,E LANSING,MI 48824
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 1991年 / 90卷 / 01期
关键词：
D O I：
10.1016/0022-4596(91)90173-F
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A systematic X-ray powder diffraction study of the Sm2O3BaCO3CuO system over the temperature range ∼920-980°C is presented as a function of cationic molar ratios. In the pseudobinary regions the phases BaSm2O4, Sm2CuO4, and BaCuO2 were observed; in the pseudoternary region Sm2BaCuO5, SmBa3Cu2Oz, Sm3Ba3Cu6Oy, and SmBa2Cu3Oy were identified. A solid solution region was found in the vicinity of SmBa2Cu3Oy. Lattice parameters are presented for each compound detected. A pseudoternary phase diagram is presented: subsolidus relationships are indicated. This system is compared with related lanthanoid-barium-copper oxide systems; only the europium system exhibits comparable phases. © 1991.
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页码：69 / 78
页数：10
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