Low temperature far-infrared complete reflectivity spectra of single crystal Ba hexaferrite

Far-infrared reflectivity measurements on single crystal barium hexaferrite are presented for E∥C and E⊥LC at room and liquid nitrogen temperatures. The experimental results were numerically analysed using two separate methods—Kramers-Krönig analysis and a fitting procedure based on a four parameter...

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Bibliographic Details
Published in:Infrared physics 1992-09, Vol.33 (5), p.401-408
Main Authors: Nikolić, P.M., Pavlović, M.B., Maričić, Z., Durić, S., Z̆ivanov, Lj, Samaras, D., Gledhill, G.A.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Dielectrics, piezoelectrics, and ferroelectrics and their properties
Exact sciences and technology
Physics
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Summary:Far-infrared reflectivity measurements on single crystal barium hexaferrite are presented for E∥C and E⊥LC at room and liquid nitrogen temperatures. The experimental results were numerically analysed using two separate methods—Kramers-Krönig analysis and a fitting procedure based on a four parameter method. All 13 active modes for E∥C predicted by group theoretical analysis were observed. The infrared (IR) transversal and longitudinal phonon frequencies and damping factors were calculated for each oscillator.
ISSN:0020-0891
DOI:10.1016/0020-0891(92)90039-V