Published 1999
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Direct measurement of super-paramagnetic fluctuations in mono-domain Fe particles
Creators
- 1. Institut Max von Laue - Paul Langevin (ILL), 38 - Grenoble (France)
- 2. Lab. Metal Physique, Nancy (France)
- 3. Laboratoire Leon Brillouin (LLB) - Centre d'Etudes de Saclay, 91 - Gif-sur-Yvette (France)
- 4. LMO, Versailles (France)
- 5. Max-Planck-Institut fuer Metallforschung, Stuttgart (Germany)
Description
By combining measurements on two spin-echo spectrometers IN15, we have measured the super-parametric relaxation of nano-scale, magnetic mono-domain iron particles over a very wide time range (0.01 to 160 nsec). Taking into account the effect of particle size distribution, we fit the line-shape of the intermediate scattering function and determine the temperature T and Q dependence of the longitudinal super-spin relaxation time. It is found that below 40 K, inter-particle correlations affect the longitudinal super-spin fluctuations. (authors)
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Additional details
Publishing Information
- Imprint Title
- Annual Report, 1998
- Imprint Pagination
- 123 p.
- Journal Page Range
- p. 30-31
- Report number
- ILL-RA--1998
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 30044495
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Progress Report
- Descriptors DEI
- DISTRIBUTION; FLUCTUATIONS; IRON; NEUTRONS; PARTICLE SIZE; PROGRESS REPORT; RELAXATION TIME; SCATTERING; SPIN ECHO; SUPERPARAMAGNETISM; TEMPERATURE DEPENDENCE; TIME DEPENDENCE
- Descriptors DEC
- BARYONS; DOCUMENT TYPES; ELEMENTARY PARTICLES; ELEMENTS; FERMIONS; HADRONS; MAGNETISM; METALS; NUCLEONS; SIZE; TRANSITION ELEMENTS; VARIATIONS
Optional Information
- Notes
- 6 refs., 2 figs.