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Hopping conduction and spin glass behavior of La2FeMnO6

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dc.contributor.author Palakkal, J P
dc.contributor.author Sankar, C R
dc.contributor.author Paulose, A P
dc.contributor.author Varma, M R
dc.date.accessioned 2019-07-08T14:00:18Z
dc.date.available 2019-07-08T14:00:18Z
dc.date.issued 2018-04-30
dc.identifier.citation Journal of Alloys and Compounds; 743:403-409 en_US
dc.identifier.uri https://www.sciencedirect.com/science/article/abs/pii/S0925838818302111
dc.description.abstract We report the existence of a charge localized state in a distorted, low-temperature phase of the perovskite La2FeMnO6 below a charge localization temperature (TCL) ∼133 K, from the detailed analysis of dc resistivity, supported by magnetic and specific heat capacity measurements. We observe that variable range hopping conduction is active below TCL while small polaron hopping conduction governs dc transport both above and below TCL, however with different activation energies. Evidence for the presence of Fe2+ is obtained from the X-ray photoelectron spectroscopic analysis, along with Fe3+, Mn3+, and Mn4+ ions which eventually result in various types of magnetic exchange interactions within the system. As a result, La2FeMnO6 exhibits a spin glass state, which is confirmed by ac susceptibility measurements, zero-field cooled memory and aging tests. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.subject Double perovskite en_US
dc.subject Spin glass en_US
dc.subject Memory and aging en_US
dc.subject La2FeMnO6 en_US
dc.title Hopping conduction and spin glass behavior of La2FeMnO6 en_US
dc.type Article en_US

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    Journal Articles authored by NIIST researchers published in 2018

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