Low temperature measurements by infrared spectroscopy in CoFe 2 O 4 ceramic

Abstract

This paper presents results of new far-infrared and middle-infrared measurements (wavenumber range of 4000-100 cm -1 ) of the CoFe 2 O 4 ceramic in the temperature range from 300 K to 8 K. The band positions and their shapes remain constant across the wide temperature range. The quality of the sample was investigated by X-ray, EDS and EPMA studies. The CoFe 2 O 4 retains the cubic structure (Fd - 3m) across the temperature range from 85 K to 360 K without any traces of distortion. Based on current knowledge the polycrystalline CoFe 2 O 4 does not exhibit any phase transitions across the temperature range from 8 K to 300 K. © 2012 Versita Warsaw and Springer-Verlag Wien.