Neutron investigation of Ru-doped Nd1/2Ca1/2MnO 3 - Comparison with Cr-doped Nd1/2Ca1/2MnO 3

Yutaka Moritomo, Akihiko Machidai, Toshihiko Nonobe, Kenji Ohoyama

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Lattice and magnetic properties are investigated for 3% Ru- and Cr-doped Nd1/2Ca1/2MnO3. The parent Nd 1/2Ca1/2MnO3 is a charge-ordered insulator (TCO = 250 K). With decreasing temperature below ≈210 K, these compounds are separated into two perovskite phases, that is, the long-c and short-c phases. The long-c region shows a ferromagnetic transition at T C ≈ 210 K for the Ru-doped compound and ≈130 K for the Cr-doped compound, while the short-c region shows antiferromagnetic transition at TN ≈ 150 K for Ru and ≈110 K for Cr. We discuss the origin of the enhanced Tc for the Ru-doped compound in terms of the effective one-electron bandwidth W of the eg-band.

Original languageEnglish
Pages (from-to)1626-1629
Number of pages4
Journaljournal of the physical society of japan
Volume71
Issue number7
DOIs
Publication statusPublished - 2002 Jul 1

Keywords

  • B-site substitution
  • Neutron powder diffraction
  • Perovskite manganite
  • Rietveld analysis

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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