Terahertz spectroscopy of multiferroic EuFe3(BO 3)4

K. N. Boldyrev, T. N. Stanislavchuk, S. A. Klimin, M. N. Popova, L. N. Bezmaternykh

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16 Scopus citations

Abstract

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(BO 3)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 TS=58 K of the R32→P3121 structural phase transition are observed. Additional shifts of phonon frequencies occur at the temperature TN=34 K of the magnetic ordering of the Fe subsystem, thus evidencing the spin-phonon coupling in this multiferroic material.

Original languageEnglish (US)
Pages (from-to)2562-2564
Number of pages3
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume376
Issue number37
DOIs
StatePublished - Jul 30 2012

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Keywords

  • Europium iron borate
  • Multiferroics
  • Terahertz spectroscopy

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