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Low temperature measurements by infrared spectroscopy in CoFe2O4 ceramic

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Bujakiewicz-Korońska R., Hetmańczyk Ł., Garbarz-Glos B., Budziak A., Kalvane A., Bormanis K., Drużbicki K.
Open Physics
|
2012
|
vol. 10
|
issue 5
1137-1143
EN
This paper presents results of new far-infrared and middle-infrared measurements (wavenumber range of 4000–100 cm−1) of the CoFe2O4 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 CoFe2O4 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 CoFe2O4 does not exhibit any phase transitions across the temperature range from 8 K to 300 K.
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