Open Access
Effect of aluminium substitution on low energy electrodynamics of barium-lead M-type hexagonal ferrites
Asmaa Ahmed
1
,
L. N. Alyabyeva
1
,
Victor Torgashev
2
,
Anatoly S Prokhorov
1, 3
,
Denis A. Vinnik
4
,
Martin Dressel
1, 5
,
Publication type: Journal Article
Publication date: 2019-11-28
SJR: 0.187
CiteScore: 1.3
Impact factor: —
ISSN: 17426588, 17426596
General Physics and Astronomy
Abstract
We present the first detailed study of the terahertz-infrared dielectric response of single crystalline lead-substituted M-type barium hexaferrites doped with Al3+. The broadband spectra of complex dielectric permittivity ε*(v)=ε'(v)+iε"(v) of Ba0.8Pb0.2AlxFe12-xO19 with concentrations of the dopant x(Al)=1.2, 3, 3.3 are obtained for two principle polarizations using Fourier-transform infrared spectroscopy and terahertz time-domain spectroscopy in the temperature range from 4 to 300 K and at frequencies from 10 cm−1 up to 8000 cm−1. We observe a rich set of excitations and assign them to the electronic transitions within the ground state 5E of the 4-fold coordinated divalent iron and to phonon resonances. Effect of Al3+ cation substitution on low energy (terahertz) dielectric response and infrared phonon spectra of barium-lead M-type hexaferrites is analysed and discussed.
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Ahmed A. et al. Effect of aluminium substitution on low energy electrodynamics of barium-lead M-type hexagonal ferrites // Journal of Physics: Conference Series. 2019. Vol. 1389. p. 12044.
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Ahmed A., Alyabyeva L. N., Torgashev V., Prokhorov A. S., Vinnik D. A., Dressel M., Gorshunov B. Effect of aluminium substitution on low energy electrodynamics of barium-lead M-type hexagonal ferrites // Journal of Physics: Conference Series. 2019. Vol. 1389. p. 12044.
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TY - JOUR
DO - 10.1088/1742-6596/1389/1/012044
UR - https://doi.org/10.1088/1742-6596/1389/1/012044
TI - Effect of aluminium substitution on low energy electrodynamics of barium-lead M-type hexagonal ferrites
T2 - Journal of Physics: Conference Series
AU - Ahmed, Asmaa
AU - Alyabyeva, L. N.
AU - Torgashev, Victor
AU - Prokhorov, Anatoly S
AU - Vinnik, Denis A.
AU - Dressel, Martin
AU - Gorshunov, B.P.
PY - 2019
DA - 2019/11/28
PB - IOP Publishing
SP - 12044
VL - 1389
SN - 1742-6588
SN - 1742-6596
ER -
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BibTex (up to 50 authors)
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@article{2019_Ahmed,
author = {Asmaa Ahmed and L. N. Alyabyeva and Victor Torgashev and Anatoly S Prokhorov and Denis A. Vinnik and Martin Dressel and B.P. Gorshunov},
title = {Effect of aluminium substitution on low energy electrodynamics of barium-lead M-type hexagonal ferrites},
journal = {Journal of Physics: Conference Series},
year = {2019},
volume = {1389},
publisher = {IOP Publishing},
month = {nov},
url = {https://doi.org/10.1088/1742-6596/1389/1/012044},
pages = {12044},
doi = {10.1088/1742-6596/1389/1/012044}
}