'oxide/oxide' superconductor materials: electrical properties of Bi-2212/insulator composites.

• Autorzy: Tortet L. , Monnereau O. , Alfred-Duplan C. , Vacquier G.
• Konferencja: XV Physical Metallurgy and Materials Science Conference on Advanced Materials & Technologies AMT'98, Kraków-Krynica, Poland, 17-21 May, 1998
• Języki publikacji: EN

Abstrakty

EN

To reinforce the electrical or mechanical properties of bismuth cuprate superconductor, composites have been elaborated by pressing polycrystalline Bi2Sr2CaCu2O8-6 (2212) mixed with two insulator oxides into pellets, which ares intered near 800 centigrade C. A large domain of composition is investigated. The Bi2CuO4 (2001) oxide reacts with the Bi-2212, decreases its Tc value but can increase its mechanical resistance. In the case of Bi2Sr3CaO7-6/2212 composites, a zero resisntance at low temperature (>> 40 K) is observed up to 80% (vol.) of insulting (2310) oxide. The percolation theory of the Effektive Medium Approximation are used to describe these experimantal results.

Słowa kluczowe

EN

superconductor; electrical properties; bismuth; insulator; sintering; crystal; composite

PL

nadprzewodnik; własności elektryczne; bizmut; izolator; spiekanie; kryształ; kompozyt

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Inżynieria Materiałowa
• Rocznik: 1998
• Tom: R. XIX, nr 4
• Strony: 872--875
• Opis fizyczny: Bibliogr. 9 poz., tab., rys.

Twórcy

autor

Tortet L.

• Laboratoire de Physico-Chimie des Matériaux (LPCM – UP) Centre St-Charles, Marseille, France

autor

Monnereau O.

• Laboratoire de Physico-Chimie des Matériaux (LPCM – UP) Centre St-Charles, Marseille, France

autor

Alfred-Duplan C.

• Laboratoire de Physico-Chimie des Matériaux (LPCM – UP) Centre St-Charles, Marseille, France

autor

Vacquier G.

• Laboratoire de Physico-Chimie des Matériaux (LPCM – UP) Centre St-Charles, Marseille, France

• Laboratoire de Physico-Chimie des Materiaux (LPCM-UP), Centre St-Charles-3, Place V.Hugo-13331, Marseille Codex 3-France

Bibliografia

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