The Structure of Sr2(VO4)Cl and Sr2(CrO4)Cl and Spectroscopic Properties of Mn5+ - and Cr5+-Doped Sr2(VO4)Cl

The Structure of Sr2(VO4)Cl and Sr2(CrO4)Cl and Spectroscopic Properties of Mn5+ - and Cr5+-Doped Sr2(VO4)Cl
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Sr2(VO4)Cl和Sr2(CrO4)Cl的结构及Mn5和Cr5掺杂Sr2(VO4)Cl的光谱性质

DOI：
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发表时间：
1993
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影响因子：
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通讯作者：
D. Reinen
D. Reinen
中科院分区：
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文献类型：
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作者：
C. Albrecht;S. Cohen;I. Mayer;D. Reinen

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报道了闪锌矿类化合物Sr2(M VO4)Cl[M=V，Cr]的结构和掺Mn5+和Cr5+的Sr2(VO4)Cl[Td基态分别为3A2和2E]的光谱性质(EPR，配位场)。有证据表明，Cr5+经历了Jahn-Teller类型的振动耦合效应。顺磁探针阳离子只有在各自的对称性中具有非简并基态，并且其离子半径与主阳离子的离子半径相当时，才能反映主位的几何形状。
Abstract The structures of the spodiosite-type compounds Sr 2 ( M V O 4 )Cl [ M = V, Cr] and the spectroscopic properties (EPR, ligand field) of Mn 5+ - and Cr 5+ -doped Sr 2 (VO 4 )Cl [ 3 A 2 and 2 E ground states in T d , respectively] are reported. Evidence is presented that Cr 5+ undergoes vibronic coupling effects of the Jahn-Teller type. Paramagnetic probe cations will only reflect the geometry of a host site, if they possess nondegenerate ground states in the respective symmetry and if their ionic radii are comparable to those of the host cations.