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Anisotropic magnetoresistance in low-doped La0.79Ca0.21MnO3 crystals
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10.1063/1.3556746
/content/aip/journal/jap/109/6/10.1063/1.3556746
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/6/10.1063/1.3556746
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Schematic arrangement of the sample, applied current and magnetic field for AMR-1 (a) and AMR-2 (b) measurements. The crystallographic [110] axis is directed along the x-axis.

Image of FIG. 2.
FIG. 2.

(Color online) Temperature dependence of the resistivity of La0.79Ca0.21MnO3 crystal at zero magnetic field and under H = 14 kOe aligned parallel and perpendicular to the current direction. Inset: The temperature dependence of magnetoresistance MR = (R(14 kOe) – R(0))/R(14 kOe) in H =14 kOe for both orientation of magnetic field.

Image of FIG. 3.
FIG. 3.

(Color online) (a) Angular variation of the magnetoresistance at H =14 kOe for AMR-1 measurements with I parallel to [110] at various temperatures. (b) The fitting of Eq. (1) to experimental data recorded at T = 200 K. (c) Angular variation of the magnetoresistance at T = 178 K H for measurements with various magnetic field.

Image of FIG. 4.
FIG. 4.

(Color online) Field dependence of δan at T =178 K in AMR-1 experiments.

Image of FIG. 5.
FIG. 5.

(Color online) Angular variation of the magnetoresistance at H = 14 kOe for measurements with H perpendicular to I and I parallel to [110] at various temperatures in AMR-2 measurements.

Image of FIG. 6.
FIG. 6.

(Color online) Temperature dependence of the anisotropy parameter δan in AMR-1 and AMR-2 measurements.

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/content/aip/journal/jap/109/6/10.1063/1.3556746
2011-03-17
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Anisotropic magnetoresistance in low-doped La0.79Ca0.21MnO3 crystals
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/6/10.1063/1.3556746
10.1063/1.3556746
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