Wide colossal magnetoresistance around room temperature in La0.7Ca0.3MnO3/La0.7Sr0.3 MnO3 composite

Chang Seop Hong, Wan Seop Kim, Nam Hwi Hur

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The magnetoresistance (MR) of La0.7Ca0.3MnO3/La0.7Sr0.3 MnO3 composite is investigated as a function of sintering temperature. Raising sintering temperature enhanced the interfacial reaction and creates interfacial phases at the boundaries of La0.7Ca0.3MnO3 and La0.7Sr0.3MnO3, as characterized by X-ray powder diffraction, scanning electron microscopy, and magnetic results. A broad MR across room temperature is observed in the composite sintered at 1300 °C, which is mainly ascribed to the combined effect of La0.7Ca0.3MnO3 and interfacial phases.

Original languageEnglish
Pages (from-to)657-660
Number of pages4
JournalSolid State Communications
Volume121
Issue number12
DOIs
Publication statusPublished - 2002 Mar 22
Externally publishedYes

Keywords

  • A. Magnetically ordered materials
  • C. Grain boundaries
  • D. Colossal magnetoresistance

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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