Distinguishing local moment versus itinerant ferromagnets: Dynamic magnetic susceptibility
Journal Article
·
· Journal of Applied Physics
Radio-frequency measurements of dynamic magnetic susceptibility of various ferromagnets show striking differences between local-moment ferromagnetism (LFM) and weak itinerant ferromagnetism (IFM) ferromagnetic systems. LFMs show a very sharp peak in susceptibility in the vicinity of the Curie temperature T{sub c} that rapidly decreases in amplitude and shifts to higher temperature with the application of a weak dc bias field. In stark contrast, the generally accepted IFM systems show no peak, but rather a broad maximum well below T{sub c}. The temperature of this maximum shifts to lower values and the amplitude is suppressed with an applied dc field.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC02-07CH11358
- OSTI ID:
- 974657
- Report Number(s):
- IS-J 7419
- Journal Information:
- Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 07D302 Vol. 103; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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