Probing the role of Nd3+ ions in the weak multiferroic character of NdMn2O5 by optical spectroscopies
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10387111" target="_blank" >RIV/00216208:11320/18:10387111 - isvavai.cz</a>
Výsledek na webu
<a href="https://doi.org/10.1103/PhysRevB.98.205119" target="_blank" >https://doi.org/10.1103/PhysRevB.98.205119</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.98.205119" target="_blank" >10.1103/PhysRevB.98.205119</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Probing the role of Nd3+ ions in the weak multiferroic character of NdMn2O5 by optical spectroscopies
Popis výsledku v původním jazyce
Raman and infrared spectroscopies are used as local probes to study the dynamics of the Nd-O bonds in the weakly multiferroic NdMn2O5 system. The temperature dependence of selected Raman excitations reveals the splitting of the Nd-O bonds in NdMn2O5. The Nd3+ ion crystal field (CF) excitations in NdMn2O5 single crystals are studied by infrared transmission as a function of temperature, in the 1800 - 8000 cm(-1) range, and under an applied magnetic field up to 11 T. The frequencies of all I-4(j) CF levels of Nd3+ are determined. We find that the degeneracy of the ground-state Kramers doublet is lifted (Delta(0) similar to 7.5 cm(-1)) due to the Nd3+ -Mn3+ interaction in the ferroelectric phase, below T-c similar to 28 K. The Nd3+ magnetic moment m(Nd) (T) and its contribution to the magnetic susceptibility and the specific heat are evaluated from Delta(0) (T) indicating that the Nd3+ ions are involved in the magnetic and the ferroelectric ordering observed below similar to 28 K. The Zeeman splitting of the excited CF levels of the Nd3+ ions at low temperature is also analyzed.
Název v anglickém jazyce
Probing the role of Nd3+ ions in the weak multiferroic character of NdMn2O5 by optical spectroscopies
Popis výsledku anglicky
Raman and infrared spectroscopies are used as local probes to study the dynamics of the Nd-O bonds in the weakly multiferroic NdMn2O5 system. The temperature dependence of selected Raman excitations reveals the splitting of the Nd-O bonds in NdMn2O5. The Nd3+ ion crystal field (CF) excitations in NdMn2O5 single crystals are studied by infrared transmission as a function of temperature, in the 1800 - 8000 cm(-1) range, and under an applied magnetic field up to 11 T. The frequencies of all I-4(j) CF levels of Nd3+ are determined. We find that the degeneracy of the ground-state Kramers doublet is lifted (Delta(0) similar to 7.5 cm(-1)) due to the Nd3+ -Mn3+ interaction in the ferroelectric phase, below T-c similar to 28 K. The Nd3+ magnetic moment m(Nd) (T) and its contribution to the magnetic susceptibility and the specific heat are evaluated from Delta(0) (T) indicating that the Nd3+ ions are involved in the magnetic and the ferroelectric ordering observed below similar to 28 K. The Zeeman splitting of the excited CF levels of the Nd3+ ions at low temperature is also analyzed.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Návaznosti výsledku
Projekt
—
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2018
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Physical Review B
ISSN
2469-9950
e-ISSN
—
Svazek periodika
98
Číslo periodika v rámci svazku
20
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
10
Strana od-do
—
Kód UT WoS článku
000449909700002
EID výsledku v databázi Scopus
2-s2.0-85056649213