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Wallisch, W., Stöger-Pollach, M., & Navickas, E. (2017). Consequences of the CMR effect on EELS in TEM. Ultramicroscopy, 179, 84–89. https://doi.org/10.1016/j.ultramic.2017.04.011
Electronic, Optical and Magnetic Materials; Atomic and Molecular Physics, and Optics; Instrumentation
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Abstract:
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 layer, we proved that the physical consequences of the CMR effect do also influence the electron energy loss spectrom- etry (EELS) signal. We observed a change of the band gap at low energy losses and were 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.
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Forschungsschwerpunkte:
Materials Characterization: 50% Special and Engineering Materials: 30% Structure-Property Relationship: 20%
