MAGNETIC FIELD-INDUCED ANISOTROPY OF RESISTANCE IN YBACUO POLYCRYSTALS.

[In Russian. / En russe.]

Type of article: Article

Summary

THE MAGNETIC FIELD-INDUCED ANISOTROPY OF RESISTANCE FOR DIFFERENT CURRENT DIRECTIONS WITH RESPECT TO MAGNETIC FIELD IN THE SUPERCONDUCTING TRANSITION REGION IS FOUND IN THESE POLYCRYSTALS WITH A RANDOM EQUIPROBABLE DISTRIBUTION OF MONOCRYSTAL-GRAIN ORIENTATIONS IN ANGLE. THE ANISOTROPY IS SHOWN TO BE MAINLY DUE TO THE ANISOTROPY OF NORMAL RESISTANCE IN GRAINS WHICH CONSTITUTE A POLYCRYSTAL. SAMPLES WITH A PRONOUNCED TEXTURE DISPLAY A MORE CONSIDERABLE ANISOTROPY OF DIFFERENT SIGN. THE ANISOTROPY IN ISOTROPIC POLYCRYSTALS VANISHES WITH APPROACHING THE PERCOLATION THRESHOLD AND CLOSE TO THE SUPERCONDUCTING TRANSITION TEMPERATURE.

Details

Original title: [In Russian. / En russe.]
Record ID : 1990-0036
Languages: Russian
Source: Fiz. nizk. Temp. - vol. 14 - n. 10
Publication date: 1988
Document available for consultation in the library of the IIR headquarters only.

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Indexing

Themes: Superconduction
Keywords: Yttrium; Superconduction; Structure; Oxide; Copper; Ceramics; Barium; Critical temperature; Electrical resistance; Superconductor; High temperature; Magnetic field