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A Mössbauer study on TiBaCa3(Cu1−xFex)3O8.5 superconductors

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Abstract

Two main superconducting phases, 1223 and 2223 in TiBaCa3Cu3O8.5 superconductor, are identified by powder x-ray analysis and57Fe Mössbauer spectroscopy analysis. The Mössbauer fitting results shown that iron atoms in the lattice substitute two inequivalent sites of copper atoms for each main phase. The temperature dependence of Mössbauer parameters are obtained, and several problems are discussed which relate to the electric charge transfer which takes place around the superconducting transition temperature, the lattice dynamics and the effect on oxygen deficiency at different temperatures.

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Authors and Affiliations

  1. Department of Physics, Beijing Normal University, Beijing, China

    Yiwei Zeng, Jiangang Lu, Xiaohua Yan, Minzhu Lin, Xianren Meng, Xioshan Wu, Qingyun Tu & Zhenjin Lin

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  1. Yiwei Zeng
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  2. Jiangang Lu
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  3. Xiaohua Yan
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  4. Minzhu Lin
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  5. Xianren Meng
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  6. Xioshan Wu
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  7. Qingyun Tu
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  8. Zhenjin Lin
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Zeng, Y., Lu, J., Yan, X. et al. A Mössbauer study on TiBaCa3(Cu1−xFex)3O8.5 superconductors. Hyperfine Interact 70, 1219–1222 (1992). https://doi.org/10.1007/BF02397549

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  • DOI: https://doi.org/10.1007/BF02397549

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