Anomalous magnetic properties and magnetic phase diagram of La1-xBaxMnO3

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

Research output: Contribution to journalArticle

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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

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Saturation magnetization
Phase diagrams
Magnetization
Magnetic properties
phase diagrams
magnetic properties
magnetization
saturation
Ground state
Doping (additives)
histories
insulators
electrical resistivity
ground state
causes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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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 0.13S 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.",
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Anomalous magnetic properties and magnetic phase diagram of La1-xBaxMnO3. / Ju, Honglyoul; Nam, Y. S.; Lee, J. E.; Shin, H. S.

In: Journal of Magnetism and Magnetic Materials, Vol. 219, No. 1, 02.08.2000, p. 1-8.

Research output: Contribution to journalArticle

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N2 - 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 0.13S 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.

AB - 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 0.13S 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.

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