Thickness effects on the magnetic and electrical transport properties of highly epitaxial LaBaCo2O5.5+δ thin films on MgO substrates
作者： Chunrui Ma , Ming Liu , Gregory Collins , Jian Liu , Yamei Zhang
DOI: 10.1063/1.4734386
关键词: Ferromagnetism 、 Nuclear magnetic resonance 、 Materials science 、 Antiferromagnetism 、 Thin film 、 Layer (electronics) 、 Magnetization 、 Magnetoresistance 、 Substrate (electronics) 、 Condensed matter physics 、 Curie temperature
摘要: The transport properties of double perovskite LaBaCo2O5.5+δ thin films with different thicknesses were systemically studied. A thin (7 nm in thickness), disordered LaBaCo2O5.5+δ layer was formed at the interface between film and substrate. had a typical semiconductor behavior antiferromagnetic ferromagnetic coexisting low temperature. Although Curie temperature independent thickness, coercive fields magnetizations increase increasing thickness. An ultra large magnetoresistance effect value about 44% obtained 60 K for 82 nm.
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