Heisenberg Analytical-Numerical Model of Nanoparticle with Para- and Ferromagnetism

• Autorzy: Leble Sergey , Chychkalo Anastasiia

Identyfikatory

DOI

10.17466/tq2019/23.3/c

• Języki publikacji: EN

Abstrakty

EN

Two models of two- and three-layers of a magnetic nanoparticle are presented applying the Heisenberg theory with the parameter (exchange integral and closest neighbors) values for surface layers, which differ from the bulk layer values. The difference in the numbers of closest neighbors is taken into account. The corresponding distribution and partition functions are constructed. The magnetization of the particles is calculated by the conventional transition to thermodynamics. The results are illustrated by plots, representing magnetization curves and hysteresis loops for the layer contributions. The magnetization curves for both models are compared.

Słowa kluczowe

EN

magnetic nanoparticle; Heisenberg partition function; agnetization curves; hysteresis loop

• Wydawca: Politechnika Gdańska
• Czasopismo: TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
• Rocznik: 2019
• Tom: Vol. 23, No 3
• Strony: 303--317
• Opis fizyczny: Bibliogr. 13 poz., rys., tab.

Twórcy

autor

Leble Sergey

• Immanuel Kant Baltic Federal University, Institute of Physics, Mathematics and Informational Technology, Al. Nevskogo, 14, Kaliningrad 236000, Russia

autor

Chychkalo Anastasiia

• Immanuel Kant Baltic Federal University, Institute of Physics, Mathematics and Informational Technology, Al. Nevskogo, 14, Kaliningrad 236000, Russia

Bibliografia

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• [4] Inglis D R 1932 The Heisenberg Theory of Ferromagnetism, Landheim Pulvermuhle, Dusslingen bei Tubingen
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• [9] Lakshmanan M 2011 The fascinating world of the Landau–Lifshitz–Gilbert equation: anoverview, Phil. Trans. R. Soc. A 369 1280
• [10] Hayashi N, Inoue T, Nakatani Y and Fukushima H 1988 Direct solution of Landau-Lifshitz-Gilbert equation for domain walls in thin Permalloy films, IEEE Transactions onMagnetics 24(6)3111 [online] https://ieeexplore.ieee.org/xpl/tocresult.jsp?isnumber=3040
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• [12] Element atom radius, [online]www.fxyz.ru
• [13] Spherical shell, [online] wikipedia.org

Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).