OPTICAL-PROPERTIES OF MANGANESE FERRITES

被引：16

作者：

SIMSA, Z ^{[1
]}

SIROKY, P ^{[1
]}

LUKES, F ^{[1
]}

SCHMIDT, E ^{[1
]}

机构：

[1] JE PURKYNE UNIV, FAC SCI, DEPT SOLID STATE PHYS, CS-61137 BRNO, CZECHOSLOVAKIA

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 1979年 / 96卷 / 01期

关键词：

D O I：

10.1002/pssb.2220960111

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The near normal reflectance spectrum together with the data on the index of refraction and the extinction coefficient are combined in a Kramers‐Kronig analysis to obtain the spectral dependences of the real and the imaginary parts of the diagonal elements of the dielectric function of the single crystal series MnxFe3−xO4 for 0 ≦ x ≦ 1.6. One‐oscillator fit to optical constants is used to show that the main rise in absorption at about 2 eV is due to the 3d‐crystal field transitions of the Fe3+ and/or Mn2+ ions in tetrahedral sites. The anomalous behaviour of optical constants below 1 eV in iron rich Mn‐ferrites is ascribed to the presence of charge carriers (Fe2+) in octahedral sites. Copyright © 1979 WILEY‐VCH Verlag GmbH & Co. KGaA

引用

页码：137 / 144

页数：8

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