Anomalous magnetic properties and magnetic phase diagram of La1-xBaxMnO3

H. L. Ju, Y. S. Nam, J. E. Lee, H. S. Shin

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Abstract

The phase diagram of colossal magnetoresistive compounds La1-xBaxMnO3 (0≤x≤1) was obtained for the first time through magnetization (5 K≤T≤360 K, -7 T ≤H≤7 T) and resistivity (100 K≤T≤400 K) measurements. Unexpectedly, La1-xBaxMnO3 compounds were found to be ferromagnetic for all x with varying magnitude of saturation magnetization (MS) with theoretically maximum MS for 0.13<x<0.5 and reduced MS for both x<0.13 and x>0.5. Near x = 0.5, the ground state changes from single phase ferromagnetic metallic state to multiphase ferromagnetic insulator state. In the two reduced MS doping regimes of x<0.13 and x>0.5, the former showed an anomalous strong field history-dependent magnetization behavior, but the latter showed a rather conventional field history-dependent magnetization behavior. We discuss the possible causes of these differences and spin structures of La1-xBaxMnO3 compounds.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalJournal of Magnetism and Magnetic Materials
Volume219
Issue number1
DOIs
Publication statusPublished - 2000 Aug 2

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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