Рубрики:
SINGLE-CRYSTAL
GDFE3(BO3)4
Кл.слова (ненормированные):
Terahertz spectroscopy -- Multiferroics -- Europium iron borate
SINGLE-CRYSTAL
GDFE3(BO3)4
Кл.слова (ненормированные):
Terahertz spectroscopy -- Multiferroics -- Europium iron borate
Аннотация: The terahertz spectra of a rare-earth iron borate with the huntite structure are obtained for the first time. We study the low-temperature (4.0–90 K) α-polarized transmittance spectra of the EuFe3(BO3)4 single crystal in the region 0.9–6.0 THz. Pronounced shifts of phonon frequencies and appearance of new phonon modes at the temperature T S = 58 K of the R 32 → P 3 1 21 structural phase transition are observed. Additional shifts of phonon frequencies occur at the temperature T N = 34 K of the magnetic ordering of the Fe subsystem, thus evidencing the spin–phonon coupling in this multiferroic material.
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Держатели документа:
[Boldyrev, K. N.
Klimin, S. A.
Popova, M. N.] RAS, Inst Spect, Troitsk 142190, Moscow Region, Russia
[Stanislavchuk, T. N.] New Jersey Inst Technol, Dept Phys, Newark, NJ 07102 USA
[Bezmaternykh, L. N.] RAS, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
Доп.точки доступа:
Boldyrev, K. N.; Stanislavchuk, T. N.; Klimin, S. A.; Popova, M. N.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич