DOI: 10.1063/1.352594. Thermal fluctuations in a pair of magnetostatically coupled particles

Thermal fluctuations in a pair of magnetostatically coupled particles

10.1063/1.352594

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

The influence of the thermal agitation on the switching dynamics for a pair of identical uniaxially anisotropic dipoles is studied for the case of the applied field parallel to the bond direction and the common anisotropy axis. A set of Langevin equations was derived from the micromagnetic energy expression and solved numerically. The switching behavior resembles a random walk over the energy barrier arising from the anisotropy of the system. The relaxation time is computed as a function of temperature, applied field, and coupling strength. The temperature dependence of the maximum energy of the fluctuations provides a method of evaluating the energy barrier of reversal. The thermal agitation is shown to reduce the symmetry of the ‘‘fanning’’ reversal mode.

Bibliography

Lyberatos, A., & Chantrell, R. W. (1993). Thermal fluctuations in a pair of magnetostatically coupled particles. Journal of Applied Physics, 73(10), 6501â6503.

Authors 2

A. Lyberatos (first)
R. W. Chantrell (additional)

References 7 Referenced 91

10.1063/1.1658830 / J. Appl. Phys. (1970)
10.1063/1.351376 / J. Appl. Phys. (1992)
{'key': '2024020417130387300_r3', 'first-page': '2224', 'volume': 'MAG-23', 'year': '1987', 'journal-title': 'IEEE Trans. Magn.'} / IEEE Trans. Magn. (1987)
{'key': '2024020417130387300_r4'}
10.1103/PhysRev.83.34 / Phys. Rev. (1951)
10.1103/PhysRev.130.1677 / Phys. Rev. (1963)
{'key': '2024020417130387300_r7', 'first-page': '99', 'volume': '5', 'year': '1949', 'journal-title': 'Ann. Géophys.'} / Ann. Géophys. (1949)

Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 8:25 a.m.)
Deposited	1 year, 6 months ago (Feb. 4, 2024, 12:13 p.m.)
Indexed	1 month ago (July 22, 2025, 6:50 a.m.)
Issued	32 years, 3 months ago (May 15, 1993)
Published	32 years, 3 months ago (May 15, 1993)
Published Print	32 years, 3 months ago (May 15, 1993)

Funders 0

None

BibTeX

@article{Lyberatos_1993, title={Thermal fluctuations in a pair of magnetostatically coupled particles}, volume={73}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.352594}, DOI={10.1063/1.352594}, number={10}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Lyberatos, A. and Chantrell, R. W.}, year={1993}, month=may, pages={6501–6503} }

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