Magnetic Properties of YBCO-PST Composites

• Authors: B. Andrzejewski , A. Kaczmarek , J. Stankowski , B. Hilczer , J. Marfaing , S. Régnier , C. Caranoni
• Languages of publication: EN

Abstracts

EN

The magnetic properties of granular superconductor-insulator composites were investigated. The composites were random composition of the YBa_{2}Cu_{3}O_{7-δ} (YBCO) high-temperature superconductor and Pb(Sc_{0.5}Ta_{0.5})O_{3} (PST) ferroelectric insulator. The composites exhibited lower superconducting volume ratio than the YBCO content. For samples with YBCO content low enough no global (the whole sample) and local (separated grains) superconductivity was observed. The observed decay of the superconductivity, lowering of the critical temperature, and the increase in number of paramagnetic centres as PST content increases are explained assuming reaction among YBCO and PST phases and possible formation of an additional ones, which did not exist in the initial powders.

Keywords

EN

74.80.Bj; 74.25.Ha; 76.30.Fc

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2000
• Volume: 98
• Issue: 6
• Pages: 739-746

Dates

published

2000-12

received

2000-09-11

(unknown)

2000-11-11

Contributors

author

B. Andrzejewski

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

A. Kaczmarek

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

J. Stankowski

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

B. Hilczer

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

J. Marfaing

• Laboratoire: Matériaux, Organisation et Propriétés (MATOP) associé au CNRS, Case 151, Faculté des Sciences et Techniques, 13397 Marseille Cedex 20, France

author

S. Régnier

• Laboratoire: Matériaux, Organisation et Propriétés (MATOP) associé au CNRS, Case 151, Faculté des Sciences et Techniques, 13397 Marseille Cedex 20, France

author

C. Caranoni

• Laboratoire: Matériaux, Organisation et Propriétés (MATOP) associé au CNRS, Case 151, Faculté des Sciences et Techniques, 13397 Marseille Cedex 20, France