Paramagnetic moments in YBa2Cu3O7-δ nanocomposite films

被引：7

作者：

Dias, F. T. ^{[1
]}

Vieira, V. N. ^{[1
]}

Silva, D. L. ^{[1
]}

Aguiar, J. Albino ^{[2
,3
]}

Valadao, D. R. B. ^{[3
]}

Obradors, X. ^{[4
]}

Puig, T. ^{[4
]}

Wolff-Fabris, F. ^{[5
]}

Kampert, E. ^{[5
]}

机构：

[1] Univ Fed Pelotas, Inst Fis & Matemat, BR-96010900 Pelotas, RS, Brazil

[2] Univ Fed Pernambuco, Dept Fis, BR-50670901 Recife, PE, Brazil

[3] Univ Fed Pernambuco, Programa Posgrad Ciencia Mat, BR-50670901 Recife, PE, Brazil

[4] CSIC, ICMAB, Bellaterra 08193, Spain

[5] HZ Dresden Rossendorf, Dresden High Magnet Field Lab, D-01314 Dresden, Germany

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2014年 / 503卷

关键词：

Field-cooled magnetization; Paramagnetic Meissner effect; Flux compression; HIGH FIELDS;

D O I：

10.1016/j.physc.2014.02.024

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on magnetization studies in YBa2Cu3O7-delta thin films with dispersed Ba2YTaO6 nanoparticles. The magnetization measurements were made using a superconducting quantum interference device (SQUID) and a vibrating sample magnetometer (VSM). Magnetic moments were measured as functions temperature using zero-field cooling (ZFC) and field-cooled (FC) prescriptions for magnetic fields up to 10 T applied parallel and perpendicular to the ab planes. A paramagnetic response related to the superconducting state was observed during the FC experiments. This effect, known as paramagnetic Meissner effect (PME), apparently increases when the magnetic field is increased. We discuss our PME results in terms of the strong pinning scenario modulated by Ba2YTaO6 nanoparticles dispersed into the superconducting matrix. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：175 / 177

页数：3

共 29 条

[1] Reentrant ac magnetic susceptibility in Josephson-junction arrays [J].

AraujoMoreira, FM ;

Barbara, P ;

Cawthorne, AB ;

Lobb, CJ .

PHYSICAL REVIEW LETTERS, 1997, 78 (24) :4625-4628

[2] Paramagnetic Meissner Transitions in Pb Films and the Vortex Compression Model [J].

Brandt, D. ;

Binns, C. ;

Gurman, S. J. ;

Torricelli, G. ;

Gray, D. S. W. .

JOURNAL OF LOW TEMPERATURE PHYSICS, 2011, 163 (3-4) :170-175

[3] PARAMAGNETIC MEISSNER EFFECT IN BI HIGH-TEMPERATURE SUPERCONDUCTORS [J].

BRAUNISCH, W ;

KNAUF, N ;

KATAEV, V ;

NEUHAUSEN, S ;

GRUTZ, A ;

KOCK, A ;

RODEN, B ;

KHOMSKII, D ;

WOHLLEBEN, D .

PHYSICAL REVIEW LETTERS, 1992, 68 (12) :1908-1911

[4] Extrinsic paramagnetic Meissner effect in multiphase indium-tin alloys [J].

Chu, Shaoyan ;

Schwartz, Adam J. ;

Massalski, Thaddeus B. ;

Laughlin, David E. .

APPLIED PHYSICS LETTERS, 2006, 89 (11)

[5] Solution-derived YBa2Cu3O7 nanocomposite films with a Ba2YTaO6 secondary phase for improved superconducting properties [J].

Coll, M. ;

Ye, S. ;

Rouco, V. ;

Palau, A. ;

Guzman, R. ;

Gazquez, J. ;

Arbiol, J. ;

Suo, H. ;

Puig, T. ;

Obradors, X. .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2013, 26 (01)

[6] Paramagnetic meissner effect in YBa2Cu3O7/La0.7Ca0.3MnO3 superlattices [J].

de la Torre, MAL ;

Peña, V ;

Sefrioui, Z ;

Arias, D ;

Leon, C ;

Santamaria, J ;

Martinez, JL .

PHYSICAL REVIEW B, 2006, 73 (05)

[7] Paramagnetic Meissner effect at high fields in YCaBaCuO single crystal and melt-textured YBaCuO [J].

Dias, F. T. ;

Vieira, V. N. ;

de Almeida, M. L. ;

Falck, A. L. ;

Pureur, P. ;

Pimentel, J. L., Jr. ;

Obradors, X. .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2010, 470 :S111-S112

[8] Paramagnetic effect at low and high magnetic fields in melt-textured YBa2Cu3O7-δ -: art. no. 224519 [J].

Dias, FT ;

Pureur, P ;

Rodrigues, P ;

Obradors, X .

PHYSICAL REVIEW B, 2004, 70 (22) :224519-1

[9] Paramagnetic Meissner effect at high fields in melt-textured YBa2Cu3O7-δ [J].

Dias, FT ;

Pureur, P ;

Rodrigues, P ;

Obradors, X .

PHYSICA C, 2001, 354 (1-4) :219-222

[10] Paramagnetic Meissner effect in small superconductors [J].

Geim, AK ;

Dubonos, SV ;

Lok, JGS ;

Henini, M ;

Maan, JC .

NATURE, 1998, 396 (6707) :144-146

← 1 2 3 →