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IR reflection spectra of manganese‐zinc ferrites
Author(s) -
Katsnelson E. Z.,
Karoza A. G.,
Meleshchenko L. A.,
Bashkirov L. A.
Publication year - 1989
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221520228
Subject(s) - spectral line , spinel , ferrite (magnet) , manganese , reflection (computer programming) , analytical chemistry (journal) , materials science , zinc , ion , dielectric , oscillator strength , chemistry , physics , metallurgy , optoelectronics , organic chemistry , chromatography , astronomy , computer science , composite material , programming language
IR reflection spectra of the Mn 1− x Zn x Fe 2 O 4 ferrite‐spinel system are investigated in the range from 200 to 800 cm −1 . The spectra of all ferrites show three reststrahlen bands ω 1 , ω 2 , and ω 3 , one of which ω 2 splits into two components. On the basis of experimental spectra optical, dielectric, and oscillator parameters and also effective dynamic ion charges are determined by Kramers‐Kronig (K‐K) analysis, dispersion analysis (DA), and successive analysis (DA–K‐K). The position and intensities of the bands, ω 1 – ω 3 , are changed with the change in ferrites' composition and show one‐mode behaviour. Conclusions are drawn about the preferable use of the DA–K‐K method for spectra analysis of the ferrites as well as about considerable covalency of the chemical bonds in the ferrites under investigation.