Magnetoresistance of mechanically induced grain boundaries in La0.7Ca0.3MnO3 films
作者： Chatchai Srinitiwarawong , Michael Ziese
DOI: 10.1063/1.122109
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摘要: The magnetoresistance of mechanically induced grain boundaries in La0.7Ca0.3MnO3 thin films is investigated. are fabricated by a mechanical deformation the LaAlO3 substrate prior to film deposition. During deposition, deformed region induces some growth disorder leading wide boundary. resulting structures show reproducible, substantial magnetic fields below 2 kG. We discuss temperature and direction dependence argue that two contributions due spin-polarized electron tunneling suppression frustration field can be identified.
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