Structural Magnetic and Superconducting Properties of the Ba_<1-x>Eu_xCuO_<3-y> Compounds
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概要
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Ba_<1-x>Eu_xCuO_<3-y> compounds, (0⪇x⪇1), were prepared by a solid-state reaction. Samples with x between 0.3 and 0.5 were the single-phase type with an orthorhombic structure like Ba_2Y_1Cu_3O_7. The difference between a_0 and b_0 was maximum at around x=0.33. The intensity of the (001) reflection, which shows a three-layer repeat sequence and oxygen vacancy ordering, also has a maximum at the same Eu content. The composition and temperature dependencies of the magnetic susceptibility indicated that the magnetic moment was associated with Eu^<3+>. The maximum T_c was obtained for a sample with x=0.30; the T_c onset was about 100 K. T_c was dependent on the Eu content and the oxygen vacancy ordering.
- 社団法人応用物理学会の論文
- 1988-02-20
著者
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OHSHIMA Shigetoshi
Department of Gastroenterology, Akita University School of Medicine
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WAKIYAMA Tokuo
Department of Electronic Engineering, Faculty of Engineering, Tohoku University
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Ohshima Shigetoshi
Department Of Electrical And Information Engineering Faculty Of Engineering Yamagata University
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Ohshima Shigetoshi
Department Of Electronic Engineering Faculty Of Engineering Tohoku Univerity
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Wakiyama Tokuo
Dept. Of Electrical Engineering Tohoku University
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Wakiyama Tokuo
Department Of Electronic Engineering Faculty Of Engineering Tohoku Univerity
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Wakiyama Tokuo
Department Of Electrical Engineering Faculty Of Engineering Tohoku University
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