Temperature-dependent far-infrared reflectance of an epitaxial
(BaTiO3)(8)/(SrTiO3)(4) superlattice

J 2017

Temperature-dependent far-infrared reflectance of an epitaxial (BaTiO3)(8)/(SrTiO3)(4) superlattice

ŽELEZNÝ, Vladimír, Ondřej CAHA, A. SOUKIASSIAN, D.G. SCHLOM, X.X. XI et. al.

Basic information

Original name

Temperature-dependent far-infrared reflectance of an epitaxial (BaTiO3)(8)/(SrTiO3)(4) superlattice

Name in Czech

Teplotní závislost reflektance epitaxní supermřížky (BaTiO3)(8)/(SrTiO3)(4) ve vzdálené infračervené oblasti

Authors

ŽELEZNÝ, Vladimír (203 Czech Republic), Ondřej CAHA (203 Czech Republic, guarantor, belonging to the institution), A. SOUKIASSIAN (840 United States of America), D.G. SCHLOM (840 United States of America) and X.X. XI (840 United States of America)

Edition

Physical Review B, AMERICAN PHYSICAL SOCIETY, 2017, 2469-9950

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10302 Condensed matter physics

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 3.813

RIV identification code

RIV/00216224:14310/17:00097121

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1103/PhysRevB.95.214110

UT WoS

000403345100001

Keywords (in Czech)

feroelektrické tenké vrstvy; BaTiO3/SrTiO3 supermřížky

Keywords in English

FERROELECTRIC THIN-FILMS; BATIO3/SRTIO3 SUPERLATTICES; POLARIZATION ENHANCEMENT; DIELECTRIC-CONSTANT; RAMAN-SPECTROSCOPY; PHASE-TRANSITIONS; STRAIN; NANOSCALE; SRTIO3; HETEROSTRUCTURES

Abstract

ORIG CZ

V originále

Infrared reflectance spectra of the polar optic phonons in a [(BaTiO3)(8)/(SrTiO3)(4)](50) superlattice over the temperature range 8 to 650 K are reported. The spectra exhibit lattice vibration features typical of the perovskite constituents, BaTiO3 and SrTiO3. Using the effective medium approximation for multilayer systems and a fitting procedure, we were able to successfully simulate the infrared reflectivity of the superlattice structures and extract the parameters and dielectric functions of the phonons. When applied at varying temperatures, this approach provides the parameters of the zone-center polar phonons and their temperature dependence. Comparing these results with x-ray diffraction we identified some anomalies in phonon behavior related to the phase transitions that the superlattice undergoes.

In Czech

Infračervená spektra optických fononů v supermřížce [(BaTiO3)(8)/(SrTiO3)(4)](50) byla naměřena pro teploty od 8 do 650K.

Links

LM2011020, research and development project

Name: CEITEC ? open access

Investor: Ministry of Education, Youth and Sports of the CR

Citovat

ŽELEZNÝ, Vladimír, Ondřej CAHA, A. SOUKIASSIAN, D.G. SCHLOM and X.X. XI. Temperature-dependent far-infrared reflectance of an epitaxial (BaTiO3)(8)/(SrTiO3)(4) superlattice. Physical Review B. AMERICAN PHYSICAL SOCIETY, 2017, vol. 95, No 21, p. "214110-1"-"214110-10", 10 pp. ISSN 2469-9950. Available from: https://dx.doi.org/10.1103/PhysRevB.95.214110.

@article{1384791,
   author = {Železný, Vladimír and Caha, Ondřej and Soukiassian, A. and Schlom, D.G. and Xi, X.X.},
   article_number = {21},
   doi = {http://dx.doi.org/10.1103/PhysRevB.95.214110},
   keywords = {FERROELECTRIC THIN-FILMS; BATIO3/SRTIO3 SUPERLATTICES; POLARIZATION ENHANCEMENT; DIELECTRIC-CONSTANT; RAMAN-SPECTROSCOPY; PHASE-TRANSITIONS; STRAIN; NANOSCALE; SRTIO3; HETEROSTRUCTURES},
   language = {eng},
   issn = {2469-9950},
   journal = {Physical Review B},
   title = {Temperature-dependent far-infrared reflectance of an epitaxial (BaTiO3)(8)/(SrTiO3)(4) superlattice},
   volume = {95},
   year = {2017}
}

TY  - JOUR
ID  - 1384791
AU  - Železný, Vladimír - Caha, Ondřej - Soukiassian, A. - Schlom, D.G. - Xi, X.X.
PY  - 2017
TI  - Temperature-dependent far-infrared reflectance of an epitaxial (BaTiO3)(8)/(SrTiO3)(4) superlattice
JF  - Physical Review B
VL  - 95
IS  - 21
SP  - "214110-1"-"214110-10"
EP  - "214110-1"-"214110-10"
PB  - AMERICAN PHYSICAL SOCIETY
SN  - 24699950
KW  - FERROELECTRIC THIN-FILMS
KW  - BATIO3/SRTIO3 SUPERLATTICES
KW  - POLARIZATION ENHANCEMENT
KW  - DIELECTRIC-CONSTANT
KW  - RAMAN-SPECTROSCOPY
KW  - PHASE-TRANSITIONS
KW  - STRAIN
KW  - NANOSCALE
KW  - SRTIO3
KW  - HETEROSTRUCTURES
N2  - Infrared reflectance spectra of the polar optic phonons in a [(BaTiO3)(8)/(SrTiO3)(4)](50) superlattice over the temperature range 8 to 650 K are reported. The spectra exhibit lattice vibration features typical of the perovskite constituents, BaTiO3 and SrTiO3. Using the effective medium approximation for multilayer systems and a fitting procedure, we were able to successfully simulate the infrared reflectivity of the superlattice structures and extract the parameters and dielectric functions of the phonons. When applied at varying temperatures, this approach provides the parameters of the zone-center polar phonons and their temperature dependence. Comparing these results with x-ray diffraction we identified some anomalies in phonon behavior related to the phase transitions that the superlattice undergoes.
ER  -

ŽELEZNÝ, Vladimír, Ondřej CAHA, A. SOUKIASSIAN, D.G. SCHLOM and X.X. XI. Temperature-dependent far-infrared reflectance of an epitaxial (BaTiO3)(8)/(SrTiO3)(4) superlattice. \textit{Physical Review B}. AMERICAN PHYSICAL SOCIETY, 2017, vol.~95, No~21, p.~''214110-1''-''214110-10'', 10 pp. ISSN~2469-9950. Available from: https://dx.doi.org/10.1103/PhysRevB.95.214110.

Detailed Information on Publication Record