Observation of flux-grown α-Fe2O3 single crystal at the morin transition by 57Fe synchrotron radiation mössbauer diffraction

Takaya Mitsui, Shin Nakamura, Naoshi Ikeda, Kosuke Fujiwara, Ryo Masuda, Yasuhiro Kobayashi, Makoto Seto

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The Morin transition of a high-quality flux-grown single crystal of α-Fe2O3 was studied by 57Fe synchrotron radiation Mössbauer diffraction. The measured rocking curves and Mössbauer spectra gave direct evidence that the coexistence of magnetic phases during the Morin transition occurred over a wide temperature range. The complex magnetic structure at the phase coexistence induced a large magnetostrictive distortion in the α-Fe2O3 crystal surface. In contrast, however, when the antiferromagnetic phase was dominant at low temperatures, the distortion disappeared, and the initial high crystal perfection was recovered. The spectral line shapes were discussed in terms of the interference between electronic and nuclear scatterings.

Original languageEnglish
Article number054705
Journaljournal of the physical society of japan
Volume85
Issue number5
DOIs
Publication statusPublished - Jan 1 2016

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Observation of flux-grown α-Fe<sub>2</sub>O<sub>3</sub> single crystal at the morin transition by <sup>57</sup>Fe synchrotron radiation mössbauer diffraction'. Together they form a unique fingerprint.

  • Cite this