Long-time variation in magnetic structure of CeIr₃Si₂: Observation of a nucleation-and-growth process of magnetic domains

Journal Article · Sun Feb 28 23:00:00 EST 2016 · Journal of the Physical Society of Japan

DOI: https://doi.org/10.7566/JPSJ.85.034722 · OSTI ID:1267057

Motoya, Kiyoichiro ^[1]; Hagihala, Masato ^[1]; Takabatake, Toshiro ^[2]; Matsuda, Masaaki ^[3]

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1. Tokyo Univ. of Science, Noda (Japan)
2. Hiroshima Univ., Higashi-Hiroshima (Japan)
3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

CeIr₃Si₂ is the first three-dimensional uniform magnet in which the long-time variation in magnetic structure was observed. To clarify the microscopic mechanism of this magnetic structural change, time-resolved neutron scattering measurements have been reinvestigated. Clear time variations in the line widths as well as the amplitudes of magnetic Bragg diffractions have been observed in this improved instrumentation. On the notion of this observation, a nucleation-and-growth model of magnetic structural change has been presented. The numerical calculation with this model reproduces well the observation.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
• Sponsoring Organization: USDOE Office of Science (SC)
• Grant/Contract Number: AC05-00OR22725
• OSTI ID: 1267057
• Journal Information: Journal of the Physical Society of Japan, Journal Name: Journal of the Physical Society of Japan Journal Issue: 3 Vol. 85; ISSN 0031-9015
• Publisher: Physical Society of JapanCopyright Statement
• Country of Publication: United States
• Language: English