Spin reorientation transition in layered perovskite CaNdFeO4

Shigeaki Oyama, Makoto Wakeshima, Yukio Hinatsu, Kenji Ohoyama

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The spin-reorientation transition of layered perovskite oxide CaNdFeO 4 has been investigated through powder x-ray and neutron diffraction, magnetic susceptibility, specific heat and 57Fe Mössbauer spectrum measurements. This oxide presents orthorhombic symmetry (space group: Bmab) with lattice parameters at room temperature a = 5.4212(1) Å, b = 5.4799(2) Å, and c = 12.0617(2) Å. Through its magnetic susceptibility and specific-heat measurements, two magnetic anomalies were found at around 7 and 35 K. From 57Fe Mössbauer spectra and neutron diffraction profiles of CaNdFeO4, it has been elucidated that the anomalies observed at 7 and 35 K correspond to the antiferromagnetic ordering of the Nd3+ ion and a change in the direction of magnetic moment of the Fe3+ ion, respectively. The magnetic structures above and below the spin-reorientation transition temperature were determined. The spin-reorientation transition observed in CaNdFeO4 has been induced by the onset of local magnetic interactions between the neodymium and iron sublattices.

Original languageEnglish
Pages (from-to)8429-8446
Number of pages18
JournalJournal of Physics Condensed Matter
Volume16
Issue number46
DOIs
Publication statusPublished - 2004 Nov 24

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

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