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|Title:||Giant magnetothermopower in charge ordered Nd0.75Na 0.25MnO3||Authors:||Maheswar Repaka, D.V.
|Issue Date:||14-Oct-2013||Citation:||Maheswar Repaka, D.V., Mahendiran, R. (2013-10-14). Giant magnetothermopower in charge ordered Nd0.75Na 0.25MnO3. Applied Physics Letters 103 (16) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.4826089||Abstract:||We report magnetization, resistivity, and thermopower in the charge-orbital ordered antiferromagnet Nd0.75Na0.25MnO3. Magnetic-field induced collapse of antiferromagnetism is found to be accompanied by a giant negative magnetothermopower (=80%-100% for a field change of 5 T) over a wide temperature (T = 60-225 K) and giant magnetoresistance. While the field-induced metamagnetic transition in magnetization is reversible upon field-cycling at T > 40 K, it is irreversible at lower temperatures and this has impact on magnetoresistance, magnetothermopower as well as change in the temperature of the sample. Our results indicate high sensitivity of thermopower to changes in the magnetic state of the sample. © 2013 AIP Publishing LLC.||Source Title:||Applied Physics Letters||URI:||http://scholarbank.nus.edu.sg/handle/10635/96728||ISSN:||00036951||DOI:||10.1063/1.4826089|
|Appears in Collections:||Staff Publications|
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