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Low-temperature resistance and magnetoresistance hysteresis in polycrystalline (La0.5Eu0.5)0.7Pb0.3MnO3
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View: Figures


Image of FIG. 1.
FIG. 1.

High-resolution transferring electron microscopy images of polycrystalline (La0.5Eu0.5)0.7Pb0.3MnO3. Arrows show the surface layer covering the grains.

Image of FIG. 2.
FIG. 2.

(Color online) Temperature dependence of resistivity ρ(T) for polycrystalline (La0.5Eu0.5)0.7Pb0.3MnO3 sample in different external magnetic fields. Insets show the temperature dependences of the MR effect.

Image of FIG. 3.
FIG. 3.

(Color online) Field dependences for the polycrystalline (La0.5Eu0.5)0.7Pb0.3MnO3 sample at different temperatures. Arrows point in the direction of motion by the magnetic field H.

Image of FIG. 4.
FIG. 4.

(Color online) The ρ(H) dependence for the polycrystalline (La0.5Eu0.5)0.7Pb0.3MnO3 at T = 4.2 K.

Image of FIG. 5.
FIG. 5.

(Color online) The ρ(H) dependences for (La0.5Eu0.5)0.7Pb0.3MnO3 for different values of maximal field Hmax.

Image of FIG. 6.
FIG. 6.

(Color online) The effect of the thermomagnetic prehistory on the ρ(T) dependence for the (La0.5Eu0.5)0.7Pb0.3MnO3.

Image of FIG. 7.
FIG. 7.

(Color online) M(T) dependence for the (La0.5Eu0.5)0.7Pb0.3MnO3 samples.

Image of FIG. 8.
FIG. 8.

Temperature dependences of Cp for the (La0.5Eu0.5)0.7Pb0.3MnO3.

Image of FIG. 9.
FIG. 9.

(Color online) The M(H) dependences for the (La0.5Eu0.5)0.7Pb0.3MnO3 at temperatures T= 4.2 K, 30 K, and 50 K.

Image of FIG. 10.
FIG. 10.

(Color online) Portions of the hysteretic dependences of magnetization taken at T = 4.2 K.

Image of FIG. 11.
FIG. 11.

(Color online) The “heights” of the magnetization and magnetoresistance hysteresis (a) ΔM = |M(H↑) − M(H↓)| and (b) Δρ = ρ(H↑) − ρ(H↓) at H↑ = H↓.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Low-temperature resistance and magnetoresistance hysteresis in polycrystalline (La0.5Eu0.5)0.7Pb0.3MnO3