Improvement of weak links between grain boundaries of polycrystalline YBa2CU3O7-y by excess Ba

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	Improvement of weak links between grain boundaries of polycrystalline YBa2CU3O7-y by excess Ba
	Z. Q. Yang; Y. Z. Wang; D. C. Zeng; H. Tang; Z. R. Li; L. Hua; C. Zhang; G. W. Qiao; A. G. Ulyashin; Y. A. Bumay
	1996
发表期刊	Physica Status Solidi a-Applied Research
ISSN	0031-8965
卷号	156 期号:1 页码:187-192
摘要	The dc field dependencies of the ac susceptibility X'' have been studied in polycrystalline samples of YBa2+xCu3O7-y with x-values ranging from 0 to 0.2. Data on X'' versus T show the expected intergranular coupling peak at the temperature T-p. For a specific dc field T-p is found to increase with x varying from 0 to 0.10, and to decrease sharply at x > 0.10. Moreover, the transport critical current density J(ct) of samples increases with x up to 0.10. According to this evidence it can be concluded that a certain excess of barium in YBa2+xCu3O7-y improves the weak links at grain boundaries.
部门归属	belorussian state polytech acad,minsk 220027,byelarus.;yang, zq (reprint author), acad sinica,inst met res,77 wenhua rd,shenyang 110015,peoples r china
关键词	High-temperature Superconductors
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/38459
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Q. Yang,Y. Z. Wang,D. C. Zeng,et al. Improvement of weak links between grain boundaries of polycrystalline YBa2CU3O7-y by excess Ba[J]. Physica Status Solidi a-Applied Research,1996,156(1):187-192.
APA	Z. Q. Yang.,Y. Z. Wang.,D. C. Zeng.,H. Tang.,Z. R. Li.,...&Y. A. Bumay.(1996).Improvement of weak links between grain boundaries of polycrystalline YBa2CU3O7-y by excess Ba.Physica Status Solidi a-Applied Research,156(1),187-192.
MLA	Z. Q. Yang,et al."Improvement of weak links between grain boundaries of polycrystalline YBa2CU3O7-y by excess Ba".Physica Status Solidi a-Applied Research 156.1(1996):187-192.