Magneto-optical spectroscopy of epitaxial CoxFe3-xO4 (001) thin films

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10477847" target="_blank" >RIV/00216208:11320/23:10477847 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=ru72pwkpeS" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=ru72pwkpeS</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3379/msjmag.2311R001" target="_blank" >10.3379/msjmag.2311R001</a>

Result language

angličtina

Original language name

Magneto-optical spectroscopy of epitaxial CoxFe3-xO4 (001) thin films

Original language description

The magneto-optical (MO) spectra of spinel cobalt ferrite thin films with different distortions were measured in a broad range of 0.59 - 3.54 eV. Instead of using the cation substitution method, we prepared cobalt ferrite thin films with local distortion by using a RF magnetron sputtering method on an Mg(2)SnO(4) buffer layer to induce epitaxial strain. We derived the diagonal and off-diagonal elements of the dielectric tensor to investigate the influence of distortion on the MO effect in the films. In the spectra of the off-diagonal dielectric elements, the transitions at 0.8, 1.8, and 2.0 eV, which correspond to the optical transitions of tetrahedral (Co(2+)) and octahedral [Co(2+)], [Fe(3+)], were assigned to crystal field (CF) transitions: (Co(2+)):(4)A(2) - T1(F), (4)A(2) - (4)T(1)(P) and intervalence charge transfer (IVCT) transition: [Co(2+)]t(2g) - [Fe(3+)]t(2g), respectively. This result revealed that the Co ions were present in both the tetrahedral and octahedral sites in the epitaxial CFO thin films. By comparing the relative amplitude of each MO transition of cobalt ferrite thin films with different distortions, we found that MO spectroscopy is a highly promising tool for evaluating local distortions.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

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

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Journal of the Magnetics Society of Japan

ISSN

1882-2924

e-ISSN

1882-2932

Volume of the periodical

47

Issue of the periodical within the volume

6

Country of publishing house

JP - JAPAN

Number of pages

7

Pages from-to

137-143

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85175803172