Answers are grounded in this paper and cite their sources.
Presents a numerical method to calculate relaxation time in uniaxial magnetic particles, indicating its applicability across physical contexts.
Models for fine magnetic particles are shortly reviewed. A method for the solution of the partial differential equation occurring in Brown's model is presented, which in the uniaxial case permits us to calculate numerical solutions for a large range of {α} values. An approximate formula for the relaxation time is given. The expression obtained is valid for 0{≤}{α}{≤}60, which corresponds to all the physical cases (including geological scale). This formula is used to fit experimental results and good agreement is obtained. In addition, the question of the validity of Brown's treatment when the magnetization is not uniform, the meaning of the dissipation constant, and quantum effects are discussed.
No takes yet. Share an insight, caveat, or question.
Bessais et al. (1992) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: