Electrical switching to probe complex phases in a frustrated manganite

Saket Asthana, Kohei Fujiwara, Hidekazu Tanaka

Research output: Contribution to journalArticle

Abstract

Electrical switching was used to investigate complex phases induced by Cr-substitution in (Pr1/3Sm2/3)2/3Sr 1/3MnO3. This system was expected to transform from a Type I (Mn4+/Mn3+≈3/7) to Type II (Mn4+/Mn 3+≈1) manganite at critical Cr content, satisfying a virtual Mn4+/Mn3+ ratio close to unity. The phase diagram of (Pr1/3Sm2/3)2/3Sr1/3Mn 0.8Cr0.2O3 including charge/spin ordered/disordered phases was probed by electrical switching. The ferromagnetic insulating phase at <~100 K, located next to the charge-ordered antiferromagnetic phase, exhibited a sudden rise in conductivity upon electric-field biasing. This resulted from the melting of charge ordering, and demonstrated the presence of a crossover regime of two coexisting magnetic orderings.

Original languageEnglish
Pages (from-to)64-67
Number of pages4
JournalSolid State Communications
Volume187
DOIs
Publication statusPublished - 2014 Jun 1
Externally publishedYes

Keywords

  • A. Charge ordered manganites
  • D. Electronic phase separation
  • E. Electrical switching

ASJC Scopus subject areas

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

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