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Title Rotational properties of ferromagnetic nanoparticles driven by a precessing magnetic field in a viscous fluid
Authors Liutyi, Taras Volodymyrovych  
Denysov, Stanislav Ivanovych  
Рева, Владіслав Валерійович
Рева, Владислав Валерьевич
Reva, Vladyslav Valeriiovych
Bystryk, Yurii Serhiiovych
Keywords Brownian rotation
rotational diffusion
Fokker-Planck equation
effective Langevin equation
Type Article
Date of Issue 2015
URI http://essuir.sumdu.edu.ua/handle/123456789/43360
Publisher American Physical Society
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Citation Rotational properties of ferromagnetic nanoparticles driven by a precessing magnetic field in a viscous fluid / T.V. Lyutyy, S.I. Denisov, V.V. Reva, Yu.S. Bystrik // Physical Review E 92, 042312 (2015).
Abstract We study the deterministic and stochastic rotational dynamics of ferromagnetic nanoparticles in a precessing magnetic field. Our approach is based on the system of effective Langevin equations and on the corresponding Fokker-Planck equation. Two key characteristics of the rotational dynamics, namely the average angular frequency of precession of nanoparticles and their average magnetization, are of interest. Using the Langevin and Fokker-Planck equations, we calculate both analytically and numerically these characteristics in the deterministic and stochastic cases, determine their dependence on the model parameters, and analyze in detail the role of thermal fluctuations.
We study the deterministic and stochastic rotational dynamics of ferromagnetic nanoparticles in a precessing magnetic field. Our approach is based on the system of effective Langevin equations and on the corresponding Fokker-Planck equation. Two key characteristics of the rotational dynamics, namely the average angular frequency of precession of nanoparticles and their average magnetization, are of interest. Using the Langevin and Fokker-Planck equations, we calculate both analytically and numerically these characteristics in the deterministic and stochastic cases, determine their dependence on the model parameters, and analyze in detail the role of thermal fluctuations.
We study the deterministic and stochastic rotational dynamics of ferromagnetic nanoparticles in a precessing magnetic field. Our approach is based on the system of effective Langevin equations and on the corresponding Fokker-Planck equation. Two key characteristics of the rotational dynamics, namely the average angular frequency of precession of nanoparticles and their average magnetization, are of interest. Using the Langevin and Fokker-Planck equations, we calculate both analytically and numerically these characteristics in the deterministic and stochastic cases, determine their dependence on the model parameters, and analyze in detail the role of thermal fluctuations.
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