Neytron diffraction study of anisotropy of crystal lattice compression in high-Tc superconductors under pressure

Neytron diffraction study of anisotropy of crystal lattice compression in high-Tc superconductors under pressure

Voronin, V. ; Mirmelstein, A. ; Karkin, A. ; Teplych, A. ; Goshchitskii, B. ; Ivanov, A. ; Smirnov, L.

Тема: Специальный выпуск Международная конференция "Сверхпроводимость. Физические аспекты"

URI: http://dspace.nbuv.gov.ua/handle/123456789/176384

Посилання: Neytron diffraction study of anisotropy of crystal lattice compression in high-Tc superconductors under pressure / V. Voronin, A. Mirmelstein, A. Karkin, A. Teplych, B. Goshchitskii, A. Ivanov, L. Smirnov // Физика низких температур. — 1996. — Т. 22, № 5. — С. 586-589. — Бібліогр.: 12 назв. — англ.

Підтримка: This research was partly supported by Scientific Council on HTSC problem (projekt 93001) and the International Scientific Foundation (grant RG 8000). Authors thank V. V, Schennikov for high pressure technics help.

Дата: 1996

Завантажень: 146

Neytron diffraction study of anisotropy of crystal lattice compression in high-Tc superconductors under pressure

Анотація:

Pressure-induced structural changes in irradiated YBa₂Cu₃Ox (л = 6.95) and unirradiated (x = 6.91, 6.54, 6.39) samples have been measured by neutron powder diffraction under high pressure. Tc has been measured for irradiated superconductors under pressure and the value of dTc/dP is found to be high (1.5 K/kbar). The increase in Tc is associated with charge transfer between the CuO₂ planes and CuO chains which is reflected by anisotropy of crystal lattice compression.

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