Magnetic property and 57Fe Mössbauer analysis of dilute Fe and Nb codoped SrTiO3-δ(STO) perovskites

Kiyoshi Nomura*, Shuhei Yamakawa, Miki Kasari, Yuya Koike, Akio Nakanishi, Shiro Kubuki, Atsushi Okazawa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Dilute Fe and Nb codoped SrTiO3-δ (STO) perovskites were prepared by a complex formation and thermal decomposition method. The structure, magnetization properties and chemical states of Fe and Nb codoped STO perovskites were characterized by XRD, VSM and Mössbauer spectrometry. Mössbauer spectra of 57Fe and Nb codoped STO perovskites consist of paramagnetic doublet and magnetic relaxation components. The 1% Fe + 5% Nb codoped STO sample showed the smallest lattice constant and the largest ferromagnetism among 0.5–4% Fe + 5% Nb codoped STO perovskites. The most distortion of cubic STO lattice and the largest magnetic relaxation in Mössbauer spectrum were observed for the 0.5% Fe and 5% Nb codoped STO perovskite. It is considered that diluted magnetism in this system is related with the deformation of cubic structure due to defects.

Original languageEnglish
Article number15
JournalHyperfine Interactions
Volume241
Issue number1
DOIs
Publication statusPublished - 2019 Dec 1
Externally publishedYes

Keywords

  • Diluted magnetism
  • Fe and Nb doped SrTiO
  • Mössbauer analysis
  • Perovskite oxide

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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