Consequences of the CMR effect on EELS in TEM

Double perovskite oxides have gained in importance and exhibit negative magnetoresistance, which is known as colossal magnetoresistance (CMR) effect. Using a La\(_2\)CoMnO\(_6\) (LCM) thin film we prove that the physical consequences of the CMR effect do also influence the electron energy loss spect...

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Bibliographic Details
Published inarXiv.org
Main Authors Wallisch, Wolfgang, Stöger-Pollach, Michael, Navickas, Edvinas
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 19.06.2018
Subjects
Colossal magnetoresistance
Curie temperature
Dichroism
Eels
Energy dissipation
Energy gap
Magnetoresistance
Magnetoresistivity
Organic chemistry
Perovskites
Physics - Materials Science
Thin films
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Summary:Double perovskite oxides have gained in importance and exhibit negative magnetoresistance, which is known as colossal magnetoresistance (CMR) effect. Using a La\(_2\)CoMnO\(_6\) (LCM) thin film we prove that the physical consequences of the CMR effect do also influence the electron energy loss spectrometry (EELS) signal. We observe a change of the band gap at low energy losses and are able to study the magnetisation with chemical sensitivity by employing energy loss magnetic chiral dichroism (EMCD) below the Curie temperature T\(_C\) where the CMR effect becomes significant.
ISSN:2331-8422
DOI:10.48550/arxiv.1806.07118