Semianalytic solution of the Kramers exit problem for a small ferromagnetic particle.
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics
; 59(6): 6444-7, 1999 Jun.
Article
in En
| MEDLINE
| ID: mdl-11969629
ABSTRACT
The distribution Q(t) of magnetization reversal times in a small uniaxial particle is computed here directly from Brown's Fokker-Planck equation. Constant applied field and axial symmetry are assumed. The Laplace transform of Q(t) has the form Q(z)=F(1)(z)/F(2)(z) where the regular functions F(i)(z) are defined by a solution of a Volterra integral equation. A separate integral equation is derived for the function dF(2)(z)/dz, and the poles and residues of Q(z) may then be found numerically with arbitary precision.
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Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics
Journal subject:
MEDICINA
Year:
1999
Document type:
Article
Affiliation country:
Taiwán