Synthesis and anomalous magnetic properties of LaFeO3 nanoparticles by hot soap method

Tatsuo Fujii, Ikkoh Matsusue, Daisuke Nakatsuka, Makoto Nakanishi, Jun Takada

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

Nanocrystalline LaFeO3 particles were synthesized at low temperatures by using hot soap technique. The synthesis was based on the thermal decomposition of organometallic compounds precipitated in a hot coordinating solvent. Moderate heat treatment at low temperature far below the combustion point of organic compounds produced spherical LaFeO3 nanoparticles with average diameter of about 15 nm. The crystalline phase, structure and particle size of obtained products were characterized by X-ray diffraction, infrared spectroscopy and transmission electron microscopy observations. In spite of the antiferromagnetic nature of bulk LaFeO3, the obtained nanoparticles exhibited anomalous large magnetization. Superparamagnetic behavior with a blocking temperature of about 30 K was observed in both magnetization and Mössbauer spectroscopic analyses.

Original languageEnglish
Pages (from-to)805-809
Number of pages5
JournalMaterials Chemistry and Physics
Volume129
Issue number3
DOIs
Publication statusPublished - Oct 3 2011

Keywords

  • Hot soap technique
  • LaFeO nanoparticles
  • Superparamagnetism
  • Surface magnetization

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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