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氟钙钛矿AMF3:Fe3+晶体中Fe3+离子的零场分裂参量及晶格缺陷研究

物理学报, 1997, 46(8): 1625-1630.
DOI: 10.7498/aps.46.1625
CSTR: 32037.14.aps.46.1625

AN INVESTIGATION FOR THE ZERO FIELD SPLITTING PARAMETERS OF Fe3+ IONS AT THE DEFECT SITES IN THE FLUOROPEROVSKITES AM F3:Fe3+

Acta Phys. Sin., 1997, 46(8): 1625-1630.
DOI: 10.7498/aps.46.1625
CSTR: 32037.14.aps.46.1625
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  • 摘要

    对氟钙钛矿晶体AMF3：Fe3+（A=K，Rb，Cs；M=Zn，Cd）四角对称占位的零场分裂（ZFS）进行分析，证实了晶格缺陷及畸变的存在．对ZFS参量随晶格畸变参量的变化关系进行了详细研究，考虑了缺陷及缺陷引起的晶格畸变两者的贡献，得出几种氟钙钛矿晶体的晶格畸变参量

     

    Abstract

    The zero field splitting (ZFS) of Fe3+ ions at the tetragonal symmetry sites in the fluoroperovskites AMF3 doped with Fe3+ is analysed and shown the existence of the crystal defects and lattice distortion.The ZFS parameters are investigated as a function of the defect induced lattice distortion parameters.The distortion parameters are obtained by adjusting them to fit the experimental ZFS data.

     

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