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Magnetoresistance of substituted lanthanum manganites La0.7Ca0.3MnO3 upon nonequilibrium overheating of carriers
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10.1063/1.3573666
/content/aip/journal/jap/109/8/10.1063/1.3573666
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/8/10.1063/1.3573666
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Figures

Image of FIG. 1.
FIG. 1.

(Color online) Experimental ρ(T) dependences of polycrystalline La0.7Ca0.3MnO3 at H = 0 and H = 13 kOe.

Image of FIG. 2.
FIG. 2.

(Color online) Experimental current–voltage characteristics (CVC’s) of La0.7Ca0.3MnO3 measured at T = 77.4 K at different applied magnetic fields.

Image of FIG. 3.
FIG. 3.

(Color online) E 2 versus ρ plot of E max(H) at j max (Fig. 2) at which the current switching effect is observed (circles). The slope of linear interpolation gives the value of specific power P = 1300 ± 100 W/cm3 same for all applied magnetic fields.

Image of FIG. 4.
FIG. 4.

(Color online) Simulation results of overheating of current streams at different magnetic fields.

Image of FIG. 5.
FIG. 5.

(Color online) Obtained E(j) dependences using the simulation results at different magnetic fields.

Image of FIG. 6.
FIG. 6.

(Color online) Experimental ρ(H) dependences of polycrystalline La0.7Ca0.3MnO3 (a) at j < j max (H = 0) and (b) at j > j max (H = 0).

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/content/aip/journal/jap/109/8/10.1063/1.3573666
2011-04-21
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Magnetoresistance of substituted lanthanum manganites La0.7Ca0.3MnO3 upon nonequilibrium overheating of carriers
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/8/10.1063/1.3573666
10.1063/1.3573666
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