Superconductivity in ba3la2lucu6oy

Takao Watanabe; Kyoichi Kinoshita; Hiroyuki Shibata; Azusa Matsuda; Yoshihiro Asano; Tomoaki Yamada

doi:10.1143/JJAP.27.L1245

Superconductivity in ba₃la₂lucu₆o_y

Takao Watanabe, Kyoichi Kinoshita, Hiroyuki Shibata, Azusa Matsuda, Yoshihiro Asano, Tomoaki Yamada

Research output: Contribution to journal › Article

6 Citations (Scopus)

Abstract

Single-phase Ba₃La₂LuCu₆O_y(y͂14) is synthesized. Superconductivity is observed after annealing in oxygen at high pressure; it is a semiconductor without annealing. Power X-ray diffraction shows that annealing changes the crystal structure of Ba₃La₂LuCu₆O_yfrom tetragonal into orthorhombic. Magnetic susceptibility measurements show that T_conset of the annealed sample is around 50 K and about 1% of the volume is superconductive. The analysis shows that the average Cu valence dependence on T_cof Ba₃La₂LuCu₆O_yand Ba₂YCu₃O_7-ydiffers.

Original language	English
Pages (from-to)	L1245-L1247
Journal	Japanese journal of applied physics
Volume	27
Issue number	7A
DOIs	https://doi.org/10.1143/JJAP.27.L1245
Publication status	Published - 1988 Jul
Externally published	Yes

Keywords

Anneal
Ba:jLa?LuCu6Ov
Crystal structure
High-pressure 02
Superconductivity

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.27.L1245

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Watanabe, T., Kinoshita, K., Shibata, H., Matsuda, A., Asano, Y., & Yamada, T. (1988). Superconductivity in ba₃la₂lucu₆o_y. Japanese journal of applied physics, 27(7A), L1245-L1247. https://doi.org/10.1143/JJAP.27.L1245

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abstract = "Single-phase Ba3La2LuCu6Oy(y͂14) is synthesized. Superconductivity is observed after annealing in oxygen at high pressure; it is a semiconductor without annealing. Power X-ray diffraction shows that annealing changes the crystal structure of Ba3La2LuCu6Oyfrom tetragonal into orthorhombic. Magnetic susceptibility measurements show that Tconset of the annealed sample is around 50 K and about 1% of the volume is superconductive. The analysis shows that the average Cu valence dependence on Tcof Ba3La2LuCu6Oyand Ba2YCu3O7-ydiffers.",

keywords = "Anneal, Ba:jLa?LuCu6Ov, Crystal structure, High-pressure 02, Superconductivity",

author = "Takao Watanabe and Kyoichi Kinoshita and Hiroyuki Shibata and Azusa Matsuda and Yoshihiro Asano and Tomoaki Yamada",

year = "1988",

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AU - Watanabe, Takao

AU - Kinoshita, Kyoichi

AU - Shibata, Hiroyuki

AU - Matsuda, Azusa

AU - Asano, Yoshihiro

AU - Yamada, Tomoaki

PY - 1988/7

Y1 - 1988/7

N2 - Single-phase Ba3La2LuCu6Oy(y͂14) is synthesized. Superconductivity is observed after annealing in oxygen at high pressure; it is a semiconductor without annealing. Power X-ray diffraction shows that annealing changes the crystal structure of Ba3La2LuCu6Oyfrom tetragonal into orthorhombic. Magnetic susceptibility measurements show that Tconset of the annealed sample is around 50 K and about 1% of the volume is superconductive. The analysis shows that the average Cu valence dependence on Tcof Ba3La2LuCu6Oyand Ba2YCu3O7-ydiffers.

AB - Single-phase Ba3La2LuCu6Oy(y͂14) is synthesized. Superconductivity is observed after annealing in oxygen at high pressure; it is a semiconductor without annealing. Power X-ray diffraction shows that annealing changes the crystal structure of Ba3La2LuCu6Oyfrom tetragonal into orthorhombic. Magnetic susceptibility measurements show that Tconset of the annealed sample is around 50 K and about 1% of the volume is superconductive. The analysis shows that the average Cu valence dependence on Tcof Ba3La2LuCu6Oyand Ba2YCu3O7-ydiffers.

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