Труды сотрудников института физики

/ V. A. Orlov, P. D. Kim // J. Sib. Fed. Univ. Math. Phys. - 2013. - Vol. 6, Is. 1. - P. 86-96 ; Журн. СФУ. Сер. "Математика и физика" . - ISSN 1997-1397
   Перевод заглавия: О низкочастотных колебаниях точки Блоха в нанодиске
Аннотация: The paper is devoted to the problem of low frequency oscillations of a magnetic vortex of small amplitude in isolated cylindrical ferromagnetic of submicronic size. The problem is solved analytically in the context of the rigid vortex model. This model assumes a certain constant magnetization distribution near the Bloch point when the vortex core is displaced from the equilibrium position. Numerical results are presented in the form of diagrams. These diagrams can be used to predict how frequencies of modes depend on geometrical sizes of a nanocylinder.
В настоящей работе аналитически решается задача о низкочастотных колебаниях магнитного вихря малой амплитуды в изолированном цилиндрическом ферромагнетике субмикронных размеров. Расчеты проводятся в модели "жесткого" вихря, т.е. распределение намагниченности вблизи точки Блоха считается неизменной при смещении ядра из положения равновесия. Построены диаграммы, позволяющие предсказать частоты мод в зависимости от геометрических размеров наноцилиндра.

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Доп.точки доступа:
Kim, P. D.; Ким, Петр Дементьевич; Орлов, Виталий Александрович

/ V. A. Orlov, V. S. Prokopenko, R. Y. Rudenko, I. N. Orlova // Phys. Met. Metallogr. - 2020. - Vol. 121, Is. 11. - P. 1039-1044, DOI 10.1134/S0031918X20100075. - Cited References: 38. - The research was funded by the Russian Foundation for Basic Research (RFBR), i.e., theoretical and numerical calculations by project No. 18-02-00161 and experimental study by project no. 20-02-00696 . - ISSN 0031-918X
Аннотация: The contribution of magnetoelastic effects to the effective magnetic anisotropy of a three-layer film nanodisk (nonmagnetic metal/ferromagnet/nonmagnetic metal) was studied. The mechanical stresses at the lateral surface of the disk that are caused by two factors, i.e., unequal thermal expansion of layers and excess surface energy at the layers interfaces, were estimated. The case in which the contribution of magnetoelastic effects to the anisotropy is comparable with those of shape and crystalline anisotropies was discussed. It was shown that the main reason for the change in the local anisotropy field in the vicinity of a nanodisk edge was the mechanical stresses induced by the excess surface energy. The possible application of film nanodisks of nickel with a bilateral golden coating as “nanolancets” for noninvasive cell surgery of tumors was discussed.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC, Siberian Branch Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Astafiev Krasnoyarsk State Pedagogical University, Krasnoyarsk, 660049, Russian Federation

Доп.точки доступа:
Orlov, V. A.; Орлов, Виталий Александрович; Prokopenko, V. S.; Rudenko, R. Y.; Orlova, I. N.