Muon spin relaxation study of spin dynamics in a polysaccharide iron complex
Journal Article
·
· Journal of Applied Physics
Polysaccharide iron complex, a ferritin analog, has been examined with zero-field muon spin-relaxation at temperatures from 2 to 40 K. Spectra exhibit a clear separation of static moments and collective excitations at low temperatures. At intermediate temperatures, superparamagnetic relaxation is observed and a blocking temperature of T{sub B}=10{+-}2.5K is measured, in agreement with transmission Mossbauer spectra and frequency dependent {chi}{sub ac} data. Superparamagnetic relaxation rates of 20{endash}150 MHz are in agreement with those extrapolated from Mossbauer spectra using a multilevel magnetic relaxation model. {copyright} 2001 American Institute of Physics.
- Sponsoring Organization:
- (US)
- OSTI ID:
- 40204148
- Journal Information:
- Journal of Applied Physics, Vol. 89, Issue 11; Other Information: DOI: 10.1063/1.1357866; Othernumber: JAPIAU000089000011007645000001; 331111MMM; PBD: 1 Jun 2001; ISSN 0021-8979
- Publisher:
- The American Physical Society
- Country of Publication:
- United States
- Language:
- English
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