PHASE-SEPARATION AND OXYGEN VARIATION IN PR-DOPED BI2SR2CACU2O8+DELTA

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	PHASE-SEPARATION AND OXYGEN VARIATION IN PR-DOPED BI2SR2CACU2O8+DELTA
	CHEN, XL ; LIANG, JK ; MIN, JR ; LI, JQ ; RAO, GH
刊名	PHYSICAL REVIEW B
	1994
卷号	50 期号:5 页码:3431
关键词	NORMAL-STATE PROPERTIES MAGNETIC-PROPERTIES SOLID-SOLUTIONS X-RAY SUPERCONDUCTIVITY TC BI2SR2CA1-XYXCU2OY Y1-XPRXBA2CU3O7 SUBSTITUTION DEPENDENCE
ISSN号	0163-1829
通讯作者	CHEN, XL (reprint author), CHINESE ACAD SCI,INST PHYS,BEIJING 100080,PEOPLES R CHINA.
中文摘要	The structural and electrical properties of Bi2Sr2Ca1-xPrxCu2O8+delta have been investigated as a function of x. Powder-x-ray-diffraction patterns indicate that this system forms a continuous solid solution. It is found that phase separation exists in this system. Two phases with different modulated periods appear as the Pr doping changes. At low doping levels, the short-period phase dominates, while at high doping levels the long-period phase dominates. The short-period phase and the long-period phase are thought to correspond to the poor-Pr- and rich-Pr-concentration phases, respectively. T(c) was found to increase slightly for x less-than-or-equal-to 0.1, decrease linearly for 0.1 less-than-or-equal-to x less-than-or-equal-to 0.4, then to be depressed rapidly for 0.4 less-than-or-equal-to x less-than-or-equal-to 0.5, and finally to disappear at x = 0.6. The valence of Pr was inferred to be close to +3 from the measurement of the oxygen content and the comparison with other rare-earth-doped Bi-2212 systems. The variation of T(c) was explained in terms of hole filling and phase separation.
收录类别	SCI
语种	英语
公开日期	2013-09-24
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/50870]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	CHEN, XL,LIANG, JK,MIN, JR,et al. PHASE-SEPARATION AND OXYGEN VARIATION IN PR-DOPED BI2SR2CACU2O8+DELTA[J]. PHYSICAL REVIEW B,1994,50(5):3431.
APA	CHEN, XL,LIANG, JK,MIN, JR,LI, JQ,&RAO, GH.(1994).PHASE-SEPARATION AND OXYGEN VARIATION IN PR-DOPED BI2SR2CACU2O8+DELTA.PHYSICAL REVIEW B,50(5),3431.
MLA	CHEN, XL,et al."PHASE-SEPARATION AND OXYGEN VARIATION IN PR-DOPED BI2SR2CACU2O8+DELTA".PHYSICAL REVIEW B 50.5(1994):3431.