Electroresistance of Electrically Nonhomogeneous La0.67Ca0.33MnO3/MgO Thin Films |
| O. Kiprijanovič, A. Lučun, S. Ašmontas, F. Anisimovas, R. Butkutė, A. Maneikis, A. Sužiedėlis and B. Vengalis
Semiconductor Physics Institute, Goštauto 11, 01108 Vilnius, Lithuania |
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| Received: 04 09 2006; |
| Current and electrical field-induced electroresistive effects were investigated for La0.67Ca0.33MnO3/MgO thin films demonstrating nanosized electrical inhomogeneities. Two different models based on enhanced conductivity of intergrain boundaries by injecting spin-polarized carriers from ferromagnetic grains and electrical field-enhanced hopping of carriers in high resistance intergrain media were carried out to explain nonlinear electrical properties of the films. |
| DOI: 10.12693/APhysPolA.111.141 PACS numbers: 73.50.Gr, 73.50.Lw, 73.63.Bd |