Neutron structural analysis of La1-xSrxMnO 3 - Variation of one-electron bandwidth W with hole doping

Sheng Xu, Yutaka Moritomo, Kenji Ohoyama, Arao Nakamura

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

We have performed neutron powder diffraction measurements for La 1-xSrxMnO3 (x = 0.00-0.20) at room temperature. We have found that the crystal structure is orthorhombic (Pbnm, Z = 4; O) at x ≤ 0.14 and rhombohedral (R3c, Z = 2; R) at x ≥ 0.18, respectively. At this structural phase transition, the averaged Mn-O-Mn bond angle 〈θ〉 discontinuously increases from 160.8° at x = 0.14 to 163.5° at x = 0.18. We have estimated relative variation of the one-electron bandwidth W of the eg-band, and discussed the insulator-metal behavior induced by hole doping.

Original languageEnglish
Pages (from-to)709-712
Number of pages4
Journaljournal of the physical society of japan
Volume72
Issue number3
DOIs
Publication statusPublished - 2003 Mar 1

Keywords

  • Neutron powder diffraction
  • Rietveld structural analysis

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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