Magnetic properties of Sm-doped Bi-2223 superconductor studied by low field local Hall generator ac susceptibility

被引：9

作者：

Yegen, D. ^{[1
]}

Varilci, A.

Yilmazlar, M.

Terzioglu, C.

Belenli, I.

机构：

[1] Abant Izzet Baysal Univ, Fac Arts & Sci, Dept Phys, TR-14280 Bolu, Turkey

[2] Sakarya Univ, Fac Educ, TR-54300 Hendek, Sakarya, Turkey

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2007年 / 466卷 / 1-2期

关键词：

D O I：

10.1016/j.physc.2007.04.260

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We studied the grain boundary properties of Sm doped Bi(Pb)SrCaCuO using the Hall generator ac susceptibility (chi = chi' + i chi"). Hall generator is a convenient tool to investigate the shielding effect of superconductors under extremely low magnetic fields. Using a Hall generator system, we have investigated diamagnetic shielding behavior of Bi1.6Pb0.4Sr2Ca2-xSmxCu3Oy samples with x = 0.0, 0.0005, 0.001, 0.005, 0.01 and 0.1. The susceptibility measurements were carried out for ac field amplitudes of 47, 94, 141, 188 and 235 A/m with the frequency of 20 Hz. The critical temperatures were estimated from the temperature dependence of the ac susceptibility curves. We have also employed X-ray diffraction, energy dispersive X-ray fluorescent and scanning electron microscopy techniques to investigate the effect of Sm doping. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：5 / 10

页数：6

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