Neutron Scattering Study of Sr Substitution for Ba in YBa2Cu3O7-y
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DING Yongfan,
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LI Jizhou,
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YANG Jilian,
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ZHANG Baisheng,
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KANG Jian,
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YE Chuntang,
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FU Qiang,
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JIN Sheng,
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CUI Yujian,
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HE Aisheng,
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HE Yusheng
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Abstract
Neutron diffraction and inelastic scattering were carried out on YBa2-xSrx Cu3O7-y(x=0.5, 1.0, 1.25). It was confirmed that the substitution of Sr for Ba in YBa2Cu3O7-y increases the oxygen vacancies in the Cu O chain. Moreover, the substitution strengthens the coupling between the Ba O plane the Cu O chain, and reduces the crystal stability. These are possible causes of Tc depression for Sr substituted YBa2Cu3O7-y.
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DING Yongfan, LI Jizhou, YANG Jilian, ZHANG Baisheng, KANG Jian, YE Chuntang, FU Qiang, JIN Sheng, CUI Yujian, HE Aisheng, HE Yusheng. Neutron Scattering Study of Sr Substitution for Ba in YBa2Cu3O7-y[J]. Chin. Phys. Lett., 1993, 10(8): 486-488.
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DING Yongfan, LI Jizhou, YANG Jilian, ZHANG Baisheng, KANG Jian, YE Chuntang, FU Qiang, JIN Sheng, CUI Yujian, HE Aisheng, HE Yusheng. Neutron Scattering Study of Sr Substitution for Ba in YBa2Cu3O7-y[J]. Chin. Phys. Lett., 1993, 10(8): 486-488.
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DING Yongfan, LI Jizhou, YANG Jilian, ZHANG Baisheng, KANG Jian, YE Chuntang, FU Qiang, JIN Sheng, CUI Yujian, HE Aisheng, HE Yusheng. Neutron Scattering Study of Sr Substitution for Ba in YBa2Cu3O7-y[J]. Chin. Phys. Lett., 1993, 10(8): 486-488.
|
DING Yongfan, LI Jizhou, YANG Jilian, ZHANG Baisheng, KANG Jian, YE Chuntang, FU Qiang, JIN Sheng, CUI Yujian, HE Aisheng, HE Yusheng. Neutron Scattering Study of Sr Substitution for Ba in YBa2Cu3O7-y[J]. Chin. Phys. Lett., 1993, 10(8): 486-488.
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