J(c) Dependence on Grain Size for YBa2Cu3O7-delta with Different Precursor Powder Size

被引：3

作者：

Rand, T. J. ^{[1
]}

Yang, Y. ^{[1
]}

Beduz, C. ^{[1
]}

Yi, Z. ^{[1
]}

Scurlock, R. G. ^{[1
]}

Riddle, R. ^{[2
]}

Sparrow, D. ^{[2
]}

机构：

[1] Univ Southampton, Inst Cryogen, Southampton SO9 5NH, Hants, England

[2] Merck Ltd, Poole, Dorset, England

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1994年 / 235-40卷

关键词：

D O I：

10.1016/0921-4534(94)91239-4

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this paper we present the transport J(c) dependence on grain size of YBa2Cu3O7-delta samples prepared with different initial powder precursor sizes (d(pr)). For a given initial particle size of YBa2Cu3O7-delta powder precursor, during the sintering process at a given temperature, grains grow to an asymptotic equilibrium grain size, d(e), which is only temperature dependent. From powders of an initial particle size, d(pr), samples of constant packing density (63 % of theoretical) were sintered at increasing temperatures, T-s, corresponding to asymptotic grain sizes, d(e), in an atmosphere of 100% O-2. These samples were characterised by J(c) measurements in self and applied field.

引用

页码：3425 / 3426

页数：2