Time-resolved SANS study of slow dynamics in the spin-glass alloy Fe0.70Al0.30

In order to probe the microscopic mechanism of slow dynamics in spin-glass materials, a time-resolved small angle neutron scattering (SANS) experiment has been made. Time-resolved SANS patterns from a concentrated spin-glass alloy Fe0.70Al0.30 have been taken up to 20 h under various temperature and...

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Bibliographic Details
Published in:Journal of the Physical Society of Japan 2003-12, Vol.72 (12), p.3212-3218
Main Authors: MOTOYA, Kiyoichiro, HIOKI, Keiko, SUZUKI, Jun-Ichi
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Metals. Metallurgy
Physics
Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.)
Spin glasses and other random magnets
Studies of specific magnetic materials
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Summary:In order to probe the microscopic mechanism of slow dynamics in spin-glass materials, a time-resolved small angle neutron scattering (SANS) experiment has been made. Time-resolved SANS patterns from a concentrated spin-glass alloy Fe0.70Al0.30 have been taken up to 20 h under various temperature and magnetic field with a typical time window of 10-30 min. We discuss the temperature and magnetic field dependence of the time evolution of the scattering pattern based on a magnetic cluster model.
ISSN:0031-9015
1347-4073
DOI:10.1143/jpsj.72.3212