Modifying the magnetoelectric coupling in TbMnO3 by low-level Fe3+ substitution
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00570777" target="_blank" >RIV/68378271:_____/23:00570777 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevB.107.104410" target="_blank" >https://doi.org/10.1103/PhysRevB.107.104410</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.107.104410" target="_blank" >10.1103/PhysRevB.107.104410</a>
Alternative languages
Result language
angličtina
Original language name
Modifying the magnetoelectric coupling in TbMnO3 by low-level Fe3+ substitution
Original language description
We report a comprehensive study of the low-level substitution of Mn3+ by Fe3+ effect on the static and dynamic magnetoelectric coupling in TbMn1−xFexO3 (x=0, 0.02, and 0.04). Low-lying electromagnon excitation is activated in the cycloidal modulated antiferromagnetic and ferroelectric phase in TbMnO3, while it is observed up to TN in the Fe-substituted compounds, pointing at different mechanisms for static and dynamic magnetoelectric coupling. A second electrically active excitation near 40 cm−1 is explained by means of Tb3+ crystal-field effects. This excitation is observed up to room temperature, and exhibits a remarkable 15 cm−1 downshift on cooling in Fe-substituted compounds. Both electromagnon and crystal-field excitations are found to be coupled to the polar phonons with frequencies up to 250 cm−1. The anomalies in the T dependence of magnetic susceptibility above TN are well accounted for by spin-phonon coupling and crystal-field excitation, coupled to oxygen 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
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
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
2469-9969
Volume of the periodical
107
Issue of the periodical within the volume
10
Country of publishing house
US - UNITED STATES
Number of pages
13
Pages from-to
104410
UT code for WoS article
000974419900001
EID of the result in the Scopus database
2-s2.0-85150864856