ANISOTROPIC OXYGEN DIFFUSION IN BI2SR2CACU2O8+X SINGLE-CRYSTALS

被引：46

作者：

LI, TW

KES, PH

FU, WT

MENOVSKY, AA

FRANSE, JJM

机构：

[1] LEIDEN UNIV,KAMERLINGH ONNES LAB,POB 9506,2300 RA LEIDEN,NETHERLANDS

[2] LEIDEN UNIV,GORLAEUS LABS,2300 RA LEIDEN,NETHERLANDS

[3] UNIV AMSTERDAM,VANDERWAALS ZEEMAN LAB,1018 XE AMSTERDAM,NETHERLANDS

来源：

PHYSICA C | 1994年 / 224卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(94)90611-4

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The weight change of Bi-2212 single-crystalline samples as a function of temperature, time and surrounding atmosphere was investigated by a classical thermogravimetric technique. Clear evidence for a correlation between T(c) and the c-axis lattice parameter was obtained. A plateau was observed in the dependence of T(c) and the c-axis lattice parameter on the oxygen contents. From the size dependence it was concluded that oxygen out-diffusion takes place in the a-b plane in a quite anisotropic way, i.e. mainly along the a-direction. At 500-degrees-C D(a)/D(b) greater-than-or-equal-to 5-6, D(ab) almost-equal-to 6.12 X 10(-8) cm2/s.

引用

页码：110 / 116

页数：7

共 38 条

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