| Record |
| Author |
Alejandro, G.; Steren, L. B.; Pastoriza, H.; Vega, D.; Granada, M.; Rojas Sánchez, J. C.; Sirena, M.; Alascio, B. |
| Title |
Magnetoresistance effect in (La, Sr)MnO_3 bicrystalline films |
Type |
Journal Article |
| Year |
2010 |
Publication |
Journal of Physics: Condensed Matter |
Abbreviated Journal |
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| Volume |
22 |
Issue |
34 |
Pages |
346007 |
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| Abstract |
The angular dependence of the magnetoresistance effect has been measured on bicrystalline La 0.75 Sr 0.25 MnO 3 films. The measurements have been performed on an electronically lithographed Wheatstone bridge. The study of the angular dependence of both the magnetoresistance and the resistance of single-crystalline and grain-boundary regions of the samples allowed us to isolate two contributions of low-field magnetoresistance in manganites. One of them is associated with the spin–orbit effect, i.e. the anisotropic magnetoresistance of ferromagnetic compounds, and the other one is related to spin-disorder regions at the grain boundary. Complementary x-ray diffraction, ferromagnetic resonance and low temperature magnetization experiments contribute to the characterization of the magnetic anisotropy of the samples and the general comprehension of the problem. |
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| ISSN |
0953-8984 |
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| Call Number |
BT @ hernan @ |
Serial |
596 |
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