Study of Orthorhombic-to-Tetragonal Transition in YBa2Cu3O7-x by Means of Magnetic Susceptibility Measurements (酸化物超伝導体<特集>)
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概要
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The magnetic susceptibility X of YBa<SUB>2</SUB>Cu<SUB>3</SUB>O<SUB>7-x</SUB> was measured from room temperature to 900 °C under oxygen pressures of 0.1, 0.2 and 0.3 atm. The change of temperature gradient of X was observed at about 600, 660 and 680 °C under 0.1, 0.2 and 0.3 atm 0<SUB>2</SUB>, respectively. This transition was attributed to the orthorhombic-to-tetragonal transition. The ortho-II phase was obtained by quench method. Observed Pelf with variation of quenching temperature has a minimum at about 800-850 °C which origin is not clear as yet.
- 社団法人 粉体粉末冶金協会の論文
著者
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Ohtani Tsukio
Laboratory For Solid State Chemistry Okayama University
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Okudo Tomoyuki
Laboratory for Solid State Chemistry, Okayama University of Science
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Tamaki Atsuhiro
Laboratory for Solid State Chemistry, Okayama University of Science
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Ueda Takeshi
Laboratory for Solid State Chemistry, Okayama University of Science
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大谷 槻男
Laboratory for Solid State Chemistry, Okayama University of Science
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