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2023-01-16T03:50:04Z
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Magnetoresistance in thin films and bulks of layered-perovskite La_{2-2x}Ca{1+2x}Mn_2O_7
Asano, H.
13736
Hayakawa, J.
13737
Matsui, M.
13738
Epitaxial thin-film and polycrystalline bulk samples of ferromagnetic La_{2-2x}Ca_{1+2x}Mn_2O_7 (x =0.3) with a layered perovskite structure have been examined with respect to their magnetotransport properties. In addition to a large magnetoresistance (MR) effect at temperatures around the metal–insulator transition, a-axis thin films exhibit unusual low-temperature MR behavior with apparent hysteresis in applied magnetic fields. The features in the bulk samples are a low-temperature MR effect without such hysteresis, and also an MR effect at high temperatures well above the metal–insulator transition temperature. The unique MR behavior depending on the sample form would reflect an anisotropic nature in the layered-perovskite ferromagnet with two-dimensional Mn-O networks.
journal article
American Institute of Physics
1997-04-28
application/pdf
Applied Physics Letters
17
70
2303
2305
http://hdl.handle.net/2237/6990
0003-6951
https://nagoya.repo.nii.ac.jp/record/5385/files/ApplPhysLett_70_2303.pdf
eng
https://doi.org/10.1063/1.118843
Copyright (1997) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.