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Valence of elements in HgBa_2Ca_(n-1)Cu_nO_(2n+2+δ)(n=1, 2, 3, 4)
作者姓名:Zhi Jian WU*  Si Yuan ZHANG Laboratory of Rare Earth Chemistry and Physics  Changchun Institute of Applied Chemistry  Chinese Academy of Sciences  Changchun
作者单位:Zhi Jian WU*,Si Yuan ZHANG Laboratory of Rare Earth Chemistry and Physics,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022
基金项目:National Natural Science Foundation of China !(Grant No. 29871029),Laboratory of Rare Earth Chemistry and Physics, Changchun
摘    要:HgBa2Can-1CunO2n+2+( (n=1, 2, 3, 4) 1 are tetragonal with space group space P4/mmm. For n=1,2,3, nearly single-phase crystals were obtained, while for n=4, the sample was primarily a mixture of the n=3 and 4 phases. These materials also possessed the highest Tc values yet observed for any superconductors. In this paper, the valences of elements in the title compounds were calculated from bond valence sum method 2. The calculated bond covalency, valences of elements were summarized in Table …

关 键 词:Valence    HgBa_2Ca_(n-1)Cu_nO_(2n+2+δ)(n=1    2    3    4).
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