Incorporating magneto-crystalline anisotropy and damping in the autoresonance oscillations modeling in thin YIG films.
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| Title: | Incorporating magneto-crystalline anisotropy and damping in the autoresonance oscillations modeling in thin YIG films. |
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| Authors: | Teplov, V.1 (AUTHOR) teplov.imp@mail.ru, Bessonov, V.1 (AUTHOR), Bessonova, V.1 (AUTHOR), Telegin, A.1 (AUTHOR) |
| Source: | Physica D. Dec2024:Part A, Vol. 470, pN.PAG-N.PAG. 1p. |
| Subjects: | Yttrium iron garnet, Perpendicular magnetic anisotropy, Frequencies of oscillating systems, Spontaneous magnetization, Magnetic anisotropy, Particle acceleration |
| Abstract: | • Autoresonance is a promising nonlinear effect that allows controlling the eigen oscillations of a system by automatically adjusting the frequency of these oscillations for the changing frequency of weak external influence. This phenomenon is applied in various fields of physics, from plasma excitation and particle acceleration to the description of the orbits of celestial bodies. However, it has never been applied in magnonics due to limitations in theoretical models, which do not allow determining the parameters necessary for its experimental observation in magnets. The highlights of the paper include the following: - Presented research is a bridge from existing models of isotropic one-dimensional magnets to real objects widely used in microwave devices – thin films of yttrium iron garnet (YIG). - A micromagnetic model of a magnetized-to-saturation yttrium iron garnet (YIG) film has been developed, in which highly-amplitude magnetic oscillations are excited by a weak, linearly polarized alternating field of about 1 Oe, capable of completely demagnetizing the film due to the autoresonance effect. The model takes into account boundary conditions, demagnetization factors, magnetic crystalline anisotropy of the film and the damping coefficient. - In addition to determining the parameters necessary for the experimental observation of the effect, the influence of magnetic crystalline anisotropy and damping on the autoresonance excitation of magnetic oscillations in YIG films has been discovered. Micromagnetic modeling of non-linear autoresonance magnetization oscillations in thin films of yttrium iron garnet (YIG) with specified growth directions is conducted. It is found that in the case of rapid frequency modulation (sweep rate of the order of 1016 Hz/sec) of 1Oe excitation magnetic field, the maximum precession angle of magnetization can achieve up to 160°. For the first time, the influence of demagnetization fields, magneto-crystalline anisotropy, and Gilbert damping on autoresonance phenomena in YIG films is numerically calculated. It is shown that demagnetization fields and damping have a weak influence on parameters of autoresonance. Simultaneously, damping provides a shorter phase-locking time between the excitation field and intrinsic magnetization oscillations in the film, favoring high amplitude of magnetization oscillations. The magneto-crystalline anisotropy leads to a reduction of the threshold sweep rate of the pumping field for YIG films with [100] direction, as well as the emergence of parametric instability for [210] films. The results of the work are aimed to be applied for the experimental observation of autoresonance phenomena in thin yttrium iron garnet films. [ABSTRACT FROM AUTHOR] |
| Copyright of Physica D is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 181035367 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Incorporating magneto-crystalline anisotropy and damping in the autoresonance oscillations modeling in thin YIG films. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Teplov%2C+V%2E%22">Teplov, V.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> teplov.imp@mail.ru</i><br /><searchLink fieldCode="AR" term="%22Bessonov%2C+V%2E%22">Bessonov, V.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bessonova%2C+V%2E%22">Bessonova, V.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Telegin%2C+A%2E%22">Telegin, A.</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Physica+D%22">Physica D</searchLink>. Dec2024:Part A, Vol. 470, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Yttrium+iron+garnet%22">Yttrium iron garnet</searchLink><br /><searchLink fieldCode="DE" term="%22Perpendicular+magnetic+anisotropy%22">Perpendicular magnetic anisotropy</searchLink><br /><searchLink fieldCode="DE" term="%22Frequencies+of+oscillating+systems%22">Frequencies of oscillating systems</searchLink><br /><searchLink fieldCode="DE" term="%22Spontaneous+magnetization%22">Spontaneous magnetization</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+anisotropy%22">Magnetic anisotropy</searchLink><br /><searchLink fieldCode="DE" term="%22Particle+acceleration%22">Particle acceleration</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: • Autoresonance is a promising nonlinear effect that allows controlling the eigen oscillations of a system by automatically adjusting the frequency of these oscillations for the changing frequency of weak external influence. This phenomenon is applied in various fields of physics, from plasma excitation and particle acceleration to the description of the orbits of celestial bodies. However, it has never been applied in magnonics due to limitations in theoretical models, which do not allow determining the parameters necessary for its experimental observation in magnets. The highlights of the paper include the following: - Presented research is a bridge from existing models of isotropic one-dimensional magnets to real objects widely used in microwave devices – thin films of yttrium iron garnet (YIG). - A micromagnetic model of a magnetized-to-saturation yttrium iron garnet (YIG) film has been developed, in which highly-amplitude magnetic oscillations are excited by a weak, linearly polarized alternating field of about 1 Oe, capable of completely demagnetizing the film due to the autoresonance effect. The model takes into account boundary conditions, demagnetization factors, magnetic crystalline anisotropy of the film and the damping coefficient. - In addition to determining the parameters necessary for the experimental observation of the effect, the influence of magnetic crystalline anisotropy and damping on the autoresonance excitation of magnetic oscillations in YIG films has been discovered. Micromagnetic modeling of non-linear autoresonance magnetization oscillations in thin films of yttrium iron garnet (YIG) with specified growth directions is conducted. It is found that in the case of rapid frequency modulation (sweep rate of the order of 1016 Hz/sec) of 1Oe excitation magnetic field, the maximum precession angle of magnetization can achieve up to 160°. For the first time, the influence of demagnetization fields, magneto-crystalline anisotropy, and Gilbert damping on autoresonance phenomena in YIG films is numerically calculated. It is shown that demagnetization fields and damping have a weak influence on parameters of autoresonance. Simultaneously, damping provides a shorter phase-locking time between the excitation field and intrinsic magnetization oscillations in the film, favoring high amplitude of magnetization oscillations. The magneto-crystalline anisotropy leads to a reduction of the threshold sweep rate of the pumping field for YIG films with [100] direction, as well as the emergence of parametric instability for [210] films. The results of the work are aimed to be applied for the experimental observation of autoresonance phenomena in thin yttrium iron garnet films. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Physica D is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.physd.2024.134386 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Yttrium iron garnet Type: general – SubjectFull: Perpendicular magnetic anisotropy Type: general – SubjectFull: Frequencies of oscillating systems Type: general – SubjectFull: Spontaneous magnetization Type: general – SubjectFull: Magnetic anisotropy Type: general – SubjectFull: Particle acceleration Type: general Titles: – TitleFull: Incorporating magneto-crystalline anisotropy and damping in the autoresonance oscillations modeling in thin YIG films. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Teplov, V. – PersonEntity: Name: NameFull: Bessonov, V. – PersonEntity: Name: NameFull: Bessonova, V. – PersonEntity: Name: NameFull: Telegin, A. IsPartOfRelationships: – BibEntity: Dates: – D: 05 M: 12 Text: Dec2024:Part A Type: published Y: 2024 Identifiers: – Type: issn-print Value: 01672789 Numbering: – Type: volume Value: 470 Titles: – TitleFull: Physica D Type: main |
| ResultId | 1 |
