EFFECTS OF HIGH PRESSURE-HIGH TEMPERATURE TREATMENT ON THE STRUCTURE COMPOSITION AND SUPERCONDUCTIVITY OF Nb3(Al, Ge) | Zendy

赵有祥 | Zendy; 刘志毅 | Zendy; 王守证 | Zendy; 郭树权 | Zendy

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EFFECTS OF HIGH PRESSURE-HIGH TEMPERATURE TREATMENT ON THE STRUCTURE COMPOSITION AND SUPERCONDUCTIVITY OF Nb3(Al, Ge)

Author(s) -

赵有祥,

刘志毅,

王守证,

郭树权

Publication year - 1983

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.32.108

Subject(s) - superconductivity , materials science , diffraction , condensed matter physics , transition temperature , composition (language) , superconducting transition temperature , chemical composition , phase (matter) , lattice constant , phase transition , thermodynamics , physics , optics , linguistics , philosophy , quantum mechanics

Alloys of different nominal composition Nb3(Al1-xGex) (where x = 0.20, 0.23, 0.25 containing A15 + σ phases) have been heat-treated under high pressure up to 67kbar. With increasing treating pressure, 1) the lattice parameter of A15 phase as well as the I211/I210 of relative integral intensity of X-ray diffraction peak (211) and (210) of A15 phase having some concern with structure composition both exhibits a maximum, 2) the structure composition of A15 phase shifts toward the Nb-rich direction, 3) the superconducting transition temperature Tc decreases, while the width of superconducting transition temperature range shows a maximum. The results were discussed.

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