Superconductivity in Ba3La2LuCu6Oy

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

Superconductivity in Ba₃La₂LuCu₆O_y

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

Research output: Contribution to journal › Article

Abstract

Single-phase Ba₃La₂LuCu₆O_y (y≈14) 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_y from tetragonal into orthorhombic. Magnetic susceptibility measurements show that T_c onset 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_c of Ba₃La₂LuCu₆O_y and Ba₂YCu₃O_7-y differs.

Original language	English
Journal	Japanese Journal of Applied Physics, Part 2: Letters
Volume	27
Issue number	7
Publication status	Published - 1988 Jul
Externally published	Yes

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ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Cite this

Watanabe, T., Kinoshita, K., Shibata, H., Matsuda, A., Asano, Y., & Yamada Tomoaki, T. (1988). Superconductivity in Ba₃La₂LuCu₆O_y Japanese Journal of Applied Physics, Part 2: Letters, 27(7).

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abstract = "Single-phase Ba3La2LuCu6Oy (y≈14) 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 Ba3La2LuCu6Oy from tetragonal into orthorhombic. Magnetic susceptibility measurements show that Tc onset 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 Tc of Ba3La2LuCu6Oy and Ba2YCu3O7-y differs.",

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year = "1988",

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language = "English",

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T1 - Superconductivity in Ba3La2LuCu6Oy

AU - Watanabe, Takao

AU - Kinoshita, Kyoichi

AU - Shibata, Hiroyuki

AU - Matsuda, Azusa

AU - Asano, Yoshihiro

AU - Yamada Tomoaki, Tomoaki

PY - 1988/7

Y1 - 1988/7

N2 - Single-phase Ba3La2LuCu6Oy (y≈14) 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 Ba3La2LuCu6Oy from tetragonal into orthorhombic. Magnetic susceptibility measurements show that Tc onset 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 Tc of Ba3La2LuCu6Oy and Ba2YCu3O7-y differs.

AB - Single-phase Ba3La2LuCu6Oy (y≈14) 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 Ba3La2LuCu6Oy from tetragonal into orthorhombic. Magnetic susceptibility measurements show that Tc onset 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 Tc of Ba3La2LuCu6Oy and Ba2YCu3O7-y differs.

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