Polar phonon anomalies in single-crystalline TbScO3

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10134085" target="_blank" >RIV/00216208:11320/13:10134085 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/13:00391870

Result on the web

<a href="http://dx.doi.org/10.1080/01411594.2012.715294" target="_blank" >http://dx.doi.org/10.1080/01411594.2012.715294</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/01411594.2012.715294" target="_blank" >10.1080/01411594.2012.715294</a>

Result language

angličtina

Original language name

Polar phonon anomalies in single-crystalline TbScO3

Original language description

Polarized infrared reflectivity spectra of a (1?1?0)-oriented TbScO3 single-crystal plate were measured down to 10?K. The number of observed polar phonons active along the crystallographic c-axis at low temperatures is much higher than predicted by the factor group analysis for the orthorhombic Pbnm- space group. Moreover, the lowest frequency phonons active in E| c as well as in E| polarized spectra exhibit dramatic softening tending to a lattice instability at low temperatures. The dielectric permittivity at microwave frequencies does not show any ferroelectric-like anomaly, but the dielectric loss exhibits a maximum at 100?K. The origin of the discrepancy between the number of predicted and observed polar phonons as well as the tendency toward lattice instability are discussed. Magnetic measurements reveal an antiferromagnetic phase transition near 3?K.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Phase Transitions

ISSN

0141-1594

e-ISSN

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Volume of the periodical

86

Issue of the periodical within the volume

2-3

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

206-216

UT code for WoS article

000313414200014

EID of the result in the Scopus database

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