SrAIF5 has been reported as one of the rare fluoride ferroelectric
crystals, belonging to the polar 14 group. However, recent x-ray
diffraction data suggest that the correct structure is centrosymmetric
(14(1)/a). Since ferroelectricity is forbidden in this structure, the
existence of an inversion centre and the high temperature phase
transition were investigated by vibrational and impedance
spectroscopies. Thus, the optical phonons of SrAlF5 single crystals were
obtained by polarized Raman scattering and infrared reflectance
spectroscopy. On the other hand, the high temperature phase transition
was determined by frequency and temperature dependent measurements of
the complex dielectric constant.
%0 Journal Article
%1 WOS:000239794200029
%A Silva, E N
%A Ayala, A P
%A Moreira, R L
%A Gesland, J Y
%C 2-4 PARK SQUARE, MILTON PARK, ABINGDON OR14 4RN, OXON, ENGLAND
%D 2006
%I TAYLOR & FRANCIS LTD
%J FERROELECTRICS
%K Impedance Raman; and ferroelectricity; infrared spectroscopies} {SrAlF5;
%P 233-240
%R 10.1080/00150190600695909
%T About the ferroelectricity of SrAlF5
%V 334
%X SrAIF5 has been reported as one of the rare fluoride ferroelectric
crystals, belonging to the polar 14 group. However, recent x-ray
diffraction data suggest that the correct structure is centrosymmetric
(14(1)/a). Since ferroelectricity is forbidden in this structure, the
existence of an inversion centre and the high temperature phase
transition were investigated by vibrational and impedance
spectroscopies. Thus, the optical phonons of SrAlF5 single crystals were
obtained by polarized Raman scattering and infrared reflectance
spectroscopy. On the other hand, the high temperature phase transition
was determined by frequency and temperature dependent measurements of
the complex dielectric constant.
@article{WOS:000239794200029,
abstract = {SrAIF5 has been reported as one of the rare fluoride ferroelectric
crystals, belonging to the polar 14 group. However, recent x-ray
diffraction data suggest that the correct structure is centrosymmetric
(14(1)/a). Since ferroelectricity is forbidden in this structure, the
existence of an inversion centre and the high temperature phase
transition were investigated by vibrational and impedance
spectroscopies. Thus, the optical phonons of SrAlF5 single crystals were
obtained by polarized Raman scattering and infrared reflectance
spectroscopy. On the other hand, the high temperature phase transition
was determined by frequency and temperature dependent measurements of
the complex dielectric constant.},
added-at = {2022-05-23T20:00:14.000+0200},
address = {2-4 PARK SQUARE, MILTON PARK, ABINGDON OR14 4RN, OXON, ENGLAND},
author = {Silva, E N and Ayala, A P and Moreira, R L and Gesland, J Y},
biburl = {https://www.bibsonomy.org/bibtex/24dd1729fb2e337688fb13c6424cdc195/ppgfis_ufc_br},
doi = {10.1080/00150190600695909},
interhash = {629f58e4a10073873bfdebbff6b1b8c9},
intrahash = {4dd1729fb2e337688fb13c6424cdc195},
issn = {0015-0193},
journal = {FERROELECTRICS},
keywords = {Impedance Raman; and ferroelectricity; infrared spectroscopies} {SrAlF5;},
note = {11th International Meeting on Ferroelectricity (IMF-11), Iguassu Falls,
BRAZIL, SEP 05-09, 2005},
organization = {Conselho Nacl Desenvolviment Cientif Tecnol; Consejo Nacl Invest Cientif
Tecn; Univ Nacl La Plata; Univ Fed Sao Carlos; Ctr Latinoamer Fis;
Taylor & Francis; Brazil-MRS; FAPESP; CAPES; Faber-Castell; Banco
Brasil},
pages = {233-240},
publisher = {TAYLOR & FRANCIS LTD},
pubstate = {published},
timestamp = {2022-05-23T20:00:14.000+0200},
title = {About the ferroelectricity of SrAlF5},
tppubtype = {article},
volume = 334,
year = 2006
}