Inverse thermal hysteresis and Peculiar Transport Properties of La(0.9)MnO(3-delta) film
2010 (English)In: Journal of Physics, Conference Series, ISSN 1742-6588, E-ISSN 1742-6596, Vol. 200, 052014- p.Article in journal (Refereed) Published
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.
Metal insulator transition, Antiferromagnetism, Ferromagnetic materials, Ferromagnetism, Hysteresis, Magnetic fields, Manganese oxide, Metal insulator boundaries, Semiconductor insulator boundaries, Temperature distribution, Transport properties
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:kth:diva-59897DOI: 10.1088/1742-6596/200/5/052014ISI: 000291321302058ScopusID: 2-s2.0-77957093087OAI: oai:DiVA.org:kth-59897DiVA: diva2:476628
FunderSwedish Research Council
QC 201201242012-01-122012-01-122012-01-24Bibliographically approved