TY - JOUR
T1 - Observation of flux-grown α-Fe2O3 single crystal at the morin transition by 57Fe synchrotron radiation mössbauer diffraction
AU - Mitsui, Takaya
AU - Nakamura, Shin
AU - Ikeda, Naoshi
AU - Fujiwara, Kosuke
AU - Masuda, Ryo
AU - Kobayashi, Yasuhiro
AU - Seto, Makoto
N1 - Funding Information:
his work was supported by a Grant-in-Aid for Scientific Research (C, 26400338) from the Japan Society for the Promotion of Science (JSPS). The first author was partially supported by a Grant-in-Aid for Scientific Research (S, 24221005) from JSPS. 57Fe-SR-M?ssbauer studies were performed at BL11XU, SPring-8 (proposal numbers 2014 B3501, 2015A3514, and 2015A3501).
Publisher Copyright:
© 2016 The Physical Society of Japan.
PY - 2016
Y1 - 2016
N2 - 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.
AB - 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.
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U2 - 10.7566/JPSJ.85.054705
DO - 10.7566/JPSJ.85.054705
M3 - Article
AN - SCOPUS:84994757213
VL - 85
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 5
M1 - 054705
ER -