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Strain-enhanced pha...
Strain-enhanced phase separation affecting electro- and magnetotransport in La0.67Ca0.33MnO3 films
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Boikov, Iouri, 1949 (author)
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- Gunnarsson, Robert, 1972 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Claeson, Tord, 1938 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2004
- 2004
- English.
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In: Journal of Applied Physics. ; 96:1, s. 435-442
- Related links:
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https://research.cha...
Abstract
Subject headings
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- Biaxial strain during nucleation influences phase separation into ferromagnetic (metallic) and nonferromagnetic (insulating) regions and that, in turn, markedly affects the electric transport of a manganite film. A 40-nm-thick La0.67Ca0.33MnO3 film, coherently constrained by a (001)LaAlO3 substrate, possesses a noticeably contracted unit cell volume (Veff[approximate]56.70 Å3) as compared with that of a stoichiometric bulk sample. It corresponds to a higher relative concentration (45%) of tetravalent manganese ions in the manganite layer than that in the target (33%). The resistivity rho(T) curve of the strained film peaks twice in the range 4.2300 K. The charge transport of strained La0.67Ca0.33MnO3 films is non-ohmic at T
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- strain
- manganite
- phase separation
Publication and Content Type
- art (subject category)
- ref (subject category)
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