Enhancement of low field magnetoresistance at room temperature in La$_{0.67}$Sr$_{0.33}$MnO$_{3}$/Al$_{2}$O$_{3}$ nanocomposite

Soumik Mukhopadhyay; I. Das

paper

Enhancement of low field magnetoresistance at room temperature in La $_{0.67}$ Sr $_{0.33}$ MnO $_{3}$ /Al $_{2}$ O $_{3}$ nanocomposite

arXiv:cond-mat/0504469

Abstract

Magnetotransport properties in a nanocrystalline La $_{0.67}$ Sr $_{0.33}$ MnO $_{3}$ /micron sized Al $_{2}$ O $_{3}$ granular composite with different concentrations of Al $_{2}$ O $_{3}$ have been studied. The resistivity curves in absence of magnetic field and the various transport mechanisms which might account for the upturn in resistivity at low temperature, has been discussed. Enhancement of low field magnetoresistance at room temperature with the introduction of Al $_{2}$ O $_{3}$ has been observed.

11 pages, 6 figures, Revtex

Enhancement of low field magnetoresistance at room temperature in La0.67​Sr0.33​MnO3​/Al2​O3​ nanocomposite

Abstract

Enhancement of low field magnetoresistance at room temperature in La $_{0.67}$ Sr $_{0.33}$ MnO $_{3}$ /Al $_{2}$ O $_{3}$ nanocomposite