Unusual ferroelectric and magnetic phases in multiferroic 2H-BaMnO3 ceramics
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F17%3A00476185" target="_blank" >RIV/68378271:_____/17:00476185 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/17:10363414
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.95.174103" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.95.174103</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.95.174103" target="_blank" >10.1103/PhysRevB.95.174103</a>
Alternative languages
Result language
angličtina
Original language name
Unusual ferroelectric and magnetic phases in multiferroic 2H-BaMnO3 ceramics
Original language description
The structural phase transition in hexagonal BaMnO3 occurring at T-C = 130 K was studied in ceramic samples using electron and x-ray diffraction, second harmonic generation, as well as by dielectric and lattice dynamic spectroscopies. The low-temperature phase (space group P6(3)cm) is ferroelectric with a triplicated unit cell. The phase transition is driven by an optical soft mode from the Brillouin-zone boundary [q = (1/3, 1/3,0)], this mode activates in infrared and Raman spectra below T-C and it hardens according to the Cochran law. Upon cooling below T-C, the permittivity exhibits an unusual linear increase with temperature, below 60 K, in turn, a frequency-dependent decrease is observed, which can be explained by slowing down of ferroelectric domain wall motions.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review B
ISSN
2469-9950
e-ISSN
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Volume of the periodical
95
Issue of the periodical within the volume
17
Country of publishing house
US - UNITED STATES
Number of pages
13
Pages from-to
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UT code for WoS article
000401225400001
EID of the result in the Scopus database
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