Effect of magnetic and nonmagnetic impurities (Ni, Zn) substitution for Cu in Bi-2(SrCa)(2+n)(Cu1-xMx)(1+n)O-y whiskers

被引：74

作者：

Kuo, YK ^{[1
]}

Schneider, CW ^{[1
]}

Skove, MJ ^{[1
]}

Nevitt, MV ^{[1
]}

Tessema, GX ^{[1
]}

McGee, JJ ^{[1
]}

机构：

[1] UNIV S CAROLINA, DEPT GEOL SCI, COLUMBIA, SC 29208 USA

来源：

PHYSICAL REVIEW B | 1997年 / 56卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.56.6201

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have measured the change in the resistive T-c of Bi-2(SrCa)(2+n)(Cu1-xMx)(1+n)O-y whiskers due to substitution of M = Ni (magnetic) or M = Zn (nonmagnetic) for Cu. These whisker crystals show resistance drops for both the 2212 and 2223 (n=1,2) phases, with transition widths (10-90 %) of 1 K. We checked the effect of oxygenation at several values of x, and found that T-c is maximum for the y obtained by growing and annealing in 1 atm of O-2. We observed a linear depression of T-c for both 2212 and 2223 phases with D=dT(c)/dx approximate to-800 K for both Ni and Zn. This is in contrast with YBCO in which D(Zn)approximate to 3D(Ni).

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页码：6201 / 6206

页数：6

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