Linear and nonlinear superparamagnetic relaxation at high anisotropy barriers

Physical Review B - Condensed Matter and Materials Physics

Volumn 66, Issue 21, 2002, Pages 2144061-21440617

  Raikher, Yu L ^a   Stepanov, V I ^a  

^a INSTITUTE OF CONTINUOUS MEDIA MECHANICS   (Russian Federation)

Author keywords

[No Author keywords available]

Indexed keywords

ANISOTROPY; ARTICLE; LOW TEMPERATURE; MAGNETISM; MATHEMATICAL ANALYSIS; THEORY;

EID: 2942707475     PISSN: 01631829     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

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27. We remark that, in principle, there might occur a situation, where τ is very long, i. e., the quality factor of precession is very high. Then the gyromagnetic term in the kinetic equation must be retained so that the Larmor precession begins to interact with the superparamagnetic (longitudinal) relaxation. An example of such a situation is considered in Ref. 24 where some interesting nonlinear effects are found.