๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Non-linear dynamic response of superparamagnetic nanoparticles

โœ Scribed by Yu.L. Raikher; V.I. Stepanov

Book ID
104305916
Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
118 KB
Volume
69
Category
Article
ISSN
0167-9317

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โœฆ Synopsis

Odd-order dynamic magnetic susceptibilities of an assembly of single-domain uniaxial particles in the low-temperature limit are considered. The solution of the micromagnetic Fokker-Planck equation is presented in the form of asymptotic series with respect to the parameter s that is the ratio of the anisotropy energy barrier height to the thermal energy. The expressions for the set of susceptibilities up to the fifth order are presented for the case of an assembly of particles randomly oriented in a solid matrix. The validity of the derived asymptotic representation in a wide range of s is proved by comparison with the numerical solution of the Fokker-Planck equation.

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