ISSN:
1432-0630
Keywords:
PACS: 81.15
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract. The magnetotransport properties of perovskite manganite films have attracted much recent interest because of the colossal magnetoresistance (CMR) exhibited. The La1-xSrxMnO3 mixed valence compound contains Mn3+ with the configuration t2g 3 eg 1 and Mn4+ ions with a t2g 3 structure. Doping with Sn could play a role regarding the structural and magnetotransport properties, for tin ions do not have the same interactions as manganese ions. We report in this work the structural and transport characteristics of as-deposited and postdeposition annealed La0.67Sr0.33Mn1-xSnxO3 thin films by pulsed-laser deposition (PLD). We analyzed the influence of the tin doping on film properties. X-ray diffraction (XRD), scanning electron microscopy (SEM), and R vs. T measurements were performed. We found that tin doping promotes oxygenation of the films, increasing the temperature of electrical transition Tρ, and could be an alternative to postannealing treatments.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s003390051474
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