Effect of hydrogen absorption on superconductivity in YBa2Cu3O6.91and GdBa2Cu3O6.89

Hironobu Fujii; Hirofumi Kawanaka; Wei Ye; Shinichi Orimo; Hitoshi Fukuba

doi:10.1143/JJAP.27.L525

Effect of hydrogen absorption on superconductivity in YBa₂Cu₃O_6.91and GdBa₂Cu₃O_6.89

Hironobu Fujii, Hirofumi Kawanaka, Wei Ye, Shinichi Orimo, Hitoshi Fukuba

Hiroshima University

Research output: Contribution to journal › Article › peer-review

67 Citations (Scopus)

Abstract

Measurements of lattice constants and ac susceptibility have been performed on YBa₂Cu₃O_6.91H_xand GdBa₂Cu₃O_6.89H_xwith x<2.0. The lattice constant a increases with increasing x, whereas the parameters b and c decrease slightly with x up to x=0.8. An orthorhombic to tetragonal transition occurs at x=0.80 for both the hydrides, after which the parameter c becomes almost constant for x up to x=1.8 in spite of the increase of the parameter a with x. The superconducting transition temperature T_cremains unchanged with x in the Y hydride system, while T_cdecreases slightly with x up tox=1.0 in the Gd hydride system. The diamagnetic signal is weakened by hydrogenation for both hydrides.

Original language	English
Pages (from-to)	L525-L528
Journal	Japanese Journal of Applied Physics
Volume	27
Issue number	4A
DOIs	https://doi.org/10.1143/JJAP.27.L525
Publication status	Published - 1988 Apr

Keywords

Ac susceptibility
Ceramics
Charge transfer
Gadolinium barium copper oxide
Heat treatment
Hydrogen absorption
Phase transition
Superconductivity
Yttrium barium copper oxide

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10.1143/JJAP.27.L525

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title = "Effect of hydrogen absorption on superconductivity in YBa2Cu3O6.91and GdBa2Cu3O6.89",

abstract = "Measurements of lattice constants and ac susceptibility have been performed on YBa2Cu3O6.91Hxand GdBa2Cu3O6.89Hxwith x<2.0. The lattice constant a increases with increasing x, whereas the parameters b and c decrease slightly with x up to x=0.8. An orthorhombic to tetragonal transition occurs at x=0.80 for both the hydrides, after which the parameter c becomes almost constant for x up to x=1.8 in spite of the increase of the parameter a with x. The superconducting transition temperature Tcremains unchanged with x in the Y hydride system, while Tcdecreases slightly with x up tox=1.0 in the Gd hydride system. The diamagnetic signal is weakened by hydrogenation for both hydrides.",

keywords = "Ac susceptibility, Ceramics, Charge transfer, Gadolinium barium copper oxide, Heat treatment, Hydrogen absorption, Phase transition, Superconductivity, Yttrium barium copper oxide",

author = "Hironobu Fujii and Hirofumi Kawanaka and Wei Ye and Shinichi Orimo and Hitoshi Fukuba",

year = "1988",

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doi = "10.1143/JJAP.27.L525",

language = "English",

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T1 - Effect of hydrogen absorption on superconductivity in YBa2Cu3O6.91and GdBa2Cu3O6.89

AU - Fujii, Hironobu

AU - Kawanaka, Hirofumi

AU - Ye, Wei

AU - Orimo, Shinichi

AU - Fukuba, Hitoshi

PY - 1988/4

Y1 - 1988/4

N2 - Measurements of lattice constants and ac susceptibility have been performed on YBa2Cu3O6.91Hxand GdBa2Cu3O6.89Hxwith x<2.0. The lattice constant a increases with increasing x, whereas the parameters b and c decrease slightly with x up to x=0.8. An orthorhombic to tetragonal transition occurs at x=0.80 for both the hydrides, after which the parameter c becomes almost constant for x up to x=1.8 in spite of the increase of the parameter a with x. The superconducting transition temperature Tcremains unchanged with x in the Y hydride system, while Tcdecreases slightly with x up tox=1.0 in the Gd hydride system. The diamagnetic signal is weakened by hydrogenation for both hydrides.

AB - Measurements of lattice constants and ac susceptibility have been performed on YBa2Cu3O6.91Hxand GdBa2Cu3O6.89Hxwith x<2.0. The lattice constant a increases with increasing x, whereas the parameters b and c decrease slightly with x up to x=0.8. An orthorhombic to tetragonal transition occurs at x=0.80 for both the hydrides, after which the parameter c becomes almost constant for x up to x=1.8 in spite of the increase of the parameter a with x. The superconducting transition temperature Tcremains unchanged with x in the Y hydride system, while Tcdecreases slightly with x up tox=1.0 in the Gd hydride system. The diamagnetic signal is weakened by hydrogenation for both hydrides.

KW - Ac susceptibility

KW - Ceramics

KW - Charge transfer

KW - Gadolinium barium copper oxide

KW - Heat treatment

KW - Hydrogen absorption

KW - Phase transition

KW - Superconductivity

KW - Yttrium barium copper oxide

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DO - 10.1143/JJAP.27.L525

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VL - 27

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JO - Japanese Journal of Applied Physics

JF - Japanese Journal of Applied Physics

IS - 4A

ER -

Effect of hydrogen absorption on superconductivity in YBa₂Cu₃O_6.91and GdBa₂Cu₃O_6.89

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Keywords

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