Octahedra-tilted control of displacement disorder and dielectric relaxation in Mn-doped SrTiO3 single crystals

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F22%3A00567152" target="_blank" >RIV/68378271:_____/22:00567152 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1021/acs.jpclett.2c03513" target="_blank" >https://doi.org/10.1021/acs.jpclett.2c03513</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpclett.2c03513" target="_blank" >10.1021/acs.jpclett.2c03513</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Octahedra-tilted control of displacement disorder and dielectric relaxation in Mn-doped SrTiO3 single crystals

Popis výsledku v původním jazyce

SrTiO3 (STO) is a canonical example of a quantum paraelectric, and its doping with Mn ions unlocks its potential as a quantum multiferroic candidate. However, to date, the specifics of incorporation of the Mn ion into the perovskite lattice and its impact on structure−property relationships are debatable questions. Herein, using high-precision X-ray diffraction of a Mn (2 atom %)-doped STO single crystal, clear fingerprints of the displacement disorder of Mn cations in the perovskite B-sublattice are observed. Moreover, near the temperature of the antiferrodistortive transition, the off-center Mn position splits in two, providing the unequal potential barrier’s distribution for possible local atomic hopping. A link with this was found via analysis of the dielectric response that reveals two Arrhenius-type relaxation processes with similar activation energies and attempt frequencies, suggesting similar dielectric relaxation mechanisms.

Název v anglickém jazyce

Octahedra-tilted control of displacement disorder and dielectric relaxation in Mn-doped SrTiO3 single crystals

Popis výsledku anglicky

SrTiO3 (STO) is a canonical example of a quantum paraelectric, and its doping with Mn ions unlocks its potential as a quantum multiferroic candidate. However, to date, the specifics of incorporation of the Mn ion into the perovskite lattice and its impact on structure−property relationships are debatable questions. Herein, using high-precision X-ray diffraction of a Mn (2 atom %)-doped STO single crystal, clear fingerprints of the displacement disorder of Mn cations in the perovskite B-sublattice are observed. Moreover, near the temperature of the antiferrodistortive transition, the off-center Mn position splits in two, providing the unequal potential barrier’s distribution for possible local atomic hopping. A link with this was found via analysis of the dielectric response that reveals two Arrhenius-type relaxation processes with similar activation energies and attempt frequencies, suggesting similar dielectric relaxation mechanisms.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Journal of Physical Chemistry Letters

ISSN

1948-7185

e-ISSN

—

Svazek periodika

13

Číslo periodika v rámci svazku

50

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

11720-11728

Kód UT WoS článku

000897547200001

EID výsledku v databázi Scopus

2-s2.0-85143981769