MAGNETOOPTICAL PROPERTIES OF NEW MANGANESE OXIDE COMPOUNDS

被引:25
作者
BALYKINA, EA [1 ]
GANSHINA, EA [1 ]
KRINCHIK, GS [1 ]
TRIFONOV, AY [1 ]
TROYANCHUK, IO [1 ]
机构
[1] ACAD SCI BESSR,INST SOLID STATE PHYS & SEMICOND,MINSK 220736,BELORUSSIA,USSR
关键词
D O I
10.1016/0304-8853(92)90319-J
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The investigation of magneto-optical properties of manganese magnetic oxide compounds containing (MnO6)9- and (MnO6)8- octahedral magnetoactive complexes - perovskites, orthomanganites, pyrochlores and ilmenites - and influence of Bi3+ and Pb2+ ions on their magneto-optical activity (MOA) was carried out in the energy range of 1.5-4.5 eV. MOA of investigated compounds was shown to be defined by the transitions in (MnO6)9- and (MnO6)8- complexes, the frequencies of these transitions were determined. The strong increase of MOA at the energies 4-4.5 eV in compounds containing both Bi3+ (or Pb2+) and Mn4+ ions was observed. The enhancement of charge-transfer transitions contribution to MOA due to the admixture of Bi3+(Pb2+)ions' (6p)-wave functions to the molecular orbitals of (MnO6)8- complexes is considered to be the most likely mechanism of this phenomenon.
引用
收藏
页码:259 / 269
页数:11
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