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Effect of "dipolar-...
Effect of "dipolar-biasing" on the tunability of tunneling magnetoresistance in transition metal oxide systems
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Kumar, P. Anil (författare)
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- Sarma, Dipankar Das (författare)
- Uppsala universitet,Materialteori
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(creator_code:org_t)
- AIP Publishing, 2012
- 2012
- Engelska.
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Ingår i: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 100:26, s. 262407-
- Relaterad länk:
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http://arxiv.org/pdf...
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visa fler...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We observe an unusual tunneling magnetoresistance (TMR) phenomenon in a composite of La2/3Sr1/3MnO3 with CoFe2O4 where the TMR versus applied magnetic field loop suggests a "negative coercive field." Tracing its origin back to a "dipolar-biasing" of La2/3Sr1/3MnO3 by CoFe2O4, we show that the TMR of even a single composite can be tuned continuously so that the resistance peak or the highest sensitivity of the TMR can be positioned anywhere on the magnetic field axis with a suitable magnetic history of the sample. This phenomenon of an unprecedented tunability of the TMR should be present in general in all such composites.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
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