Magnetic phase transitions in SmCoAsO

V. P.S. Awana, I. Nowik, Anand Pal, K. Yamaura, E. Takayama-Muromachi, I. Felner

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)


Magnetization, x-ray diffraction, and specific-heat measurements reveal that SmCoAsO undergoes three magnetic phase transitions. A ferromagnetic transition attributed to the Co ions, emerges at TC =57 K with a small saturation moment of ∼0.15 μB/Co. Reorientation of the Co moment to an antiferromagnetic state is obtained at TN2 =45 K. The relative high paramagnetic effective moment Peff =1.57 μB/Co indicates an itinerant ferromagnetic state of the Co sublattice. The third magnetic transition at TN1=5 K is observed clearly in the specific-heat study only. Both magnetic and F 57 e Mossbauer studies show that substitution of small quantities of Fe for Co was unsuccessful.

Original languageEnglish
Article number212501
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number21
Publication statusPublished - 01-06-2010

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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