Superconductivity in Sn nanocomposites

被引：11

作者：

Ciou, Y. S. ^{[1
]}

Lee, M. K. ^{[1
,2
]}

Charnaya, E. V. ^{[1
,3
]}

Tien, C. ^{[1
]}

Chang, L. J. ^{[1
]}

Kumzerov, Yu A. ^{[4
]}

Samoylovich, M. I. ^{[5
]}

机构：

[1] Natl Cheng Kung Univ, Dept Phys, Tainan 70101, Taiwan

[2] Natl Cheng Kung Univ, NSC Instrument Ctr, Tainan 70101, Taiwan

[3] St Petersburg State Univ, Inst Phys, St Petersburg 198504, Petrodvorets, Russia

[4] RAS, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia

[5] Cent Res Technol Inst TECHNOMASH, Moscow 121108, Russia

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2013年 / 26卷 / 05期

关键词：

POROUS-GLASS; SUSCEPTIBILITY; TEMPERATURE; GALLIUM; MAGNETIZATION; TRANSITION; INDIUM; HEAT;

D O I：

10.1088/0953-2048/26/5/055009

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An ac magnetization technique was used to study superconductivity in tin loaded nanoporous silica matrices, opal matrix and two porous glasses. The behavior of type-II superconductors with a sharp transition at zero bias field was observed. Regular increase in the superconducting temperature up to 4.2 K and in a critical field up to H-c2(0) congruent to D 54 kOe with decreasing pore size was found. A crossover from the upturn to the common downturn curvature in the H-c2(T) line was seen for all nanocomposites; the upturn curvature was more pronounced for the matrix with the finest pores.

引用

页数：5

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