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Inverse thermal hysteresis and Peculiar Transport Properties of La(0.9)MnO(3-delta) film
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.ORCID iD: 0000-0001-8774-9302
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2010 (English)In: Journal of Physics, Conference Series, ISSN 1742-6588, E-ISSN 1742-6596, Vol. 200, 052014- p.Article in journal (Refereed) Published
Abstract [en]

Magnetic and transport properties of 100 nm thick La(0.9)MnO(3-delta) manganite films have been studied in the temperature range 5 - 300 K. The films exhibit a paramagnetic to ferromagnetic transition at T(C) approximate to 194 K. The temperature dependence of the resistivity shows a metal-insulator transition at 204 K and a strong resistivity increase at temperatures T < 160 K. Variations of resistivity with magnetic field and current are non-hysteretic, while the temperature dependence of the resistivity exhibits unusual inverse thermal hysteresis. The magnetic field independent inverse thermal hysteresis depends significantly on the thermal history of the sample. The data suggests that nonlinear transport characteristics are attributed to inelastic tunneling through intrinsic tunnel juctions formed by phase separated ferromagnetic metallic domains and insulating antiferromagnetic matrics.

Place, publisher, year, edition, pages
2010. Vol. 200, 052014- p.
Keyword [en]
Metal insulator transition, Antiferromagnetism, Ferromagnetic materials, Ferromagnetism, Hysteresis, Magnetic fields, Manganese oxide, Metal insulator boundaries, Semiconductor insulator boundaries, Temperature distribution, Transport properties
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:kth:diva-59897DOI: 10.1088/1742-6596/200/5/052014ISI: 000291321302058Scopus ID: 2-s2.0-77957093087OAI: oai:DiVA.org:kth-59897DiVA: diva2:476628
Funder
Swedish Research Council
Note
QC 20120124Available from: 2012-01-12 Created: 2012-01-12 Last updated: 2017-12-08Bibliographically approved

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Khartsev, Sergiy

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CiteExportLink to record
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