TY - JOUR
T1 - Raman spectroscopy of multiferroic trigonal boracite Co3 B7 O13 Cl
AU - Iliev, M. N.
AU - Hadjiev, V. G.
AU - Mendoza, M. E.
AU - Pascual, J.
PY - 2007/12/20
Y1 - 2007/12/20
N2 - Raman microscopy was applied to study the polarized Raman scattering from untwinned domains of Co3 B7 O13 Cl (Co-Cl) in the trigonal, R3c, ferroelectric phase. The symmetry (A1 or E) and mode polarization (LO or TO) for all observed Raman lines were determined from comparison of the spectra measured in several scattering configurations. It was found that as a rule, the TO-LO splitting is small or negligible. A group of A1 modes, characterized by a quasi-one-component Raman tensor, was tentatively assigned to stretching vibrations of Cl, O, or B along the trigonal axis, which in this material is parallel to the ferroelectric polarization direction. © 2007 The American Physical Society.
AB - Raman microscopy was applied to study the polarized Raman scattering from untwinned domains of Co3 B7 O13 Cl (Co-Cl) in the trigonal, R3c, ferroelectric phase. The symmetry (A1 or E) and mode polarization (LO or TO) for all observed Raman lines were determined from comparison of the spectra measured in several scattering configurations. It was found that as a rule, the TO-LO splitting is small or negligible. A group of A1 modes, characterized by a quasi-one-component Raman tensor, was tentatively assigned to stretching vibrations of Cl, O, or B along the trigonal axis, which in this material is parallel to the ferroelectric polarization direction. © 2007 The American Physical Society.
UR - https://www.scopus.com/pages/publications/37549029509
U2 - 10.1103/PhysRevB.76.214112
DO - 10.1103/PhysRevB.76.214112
M3 - Article
SN - 1098-0121
VL - 76
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 21
M1 - 214112
ER -