Modulation of Electromagnetic Damping and Charge–Spin Conversion in Pt/Py 100−x Gd x Heterostructure.
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| Title: | Modulation of Electromagnetic Damping and Charge–Spin Conversion in Pt/Py 100−x Gd x Heterostructure. |
|---|---|
| Authors: | Ju, Hongzhan1 (AUTHOR), Wu, Jinxiang2 (AUTHOR), Zhao, Xiaotian1,2 (AUTHOR) wliu@imr.ac.cn, Liu, Long2 (AUTHOR) xtzhao@imr.ac.cn, Liu, Wei2 (AUTHOR) |
| Source: | Materials (1996-1944). Jun2026, Vol. 19 Issue 12, p2601. 18p. |
| Subjects: | Spintronics, Spin Hall effect, Ferromagnetic resonance, Magnetic relaxation, Gadolinium compounds |
| Abstract: | Highlights: Gd doped in Py fabricated by magnetron sputtering and magnetic properties in Pt/Py-Gd films. The magnetic damping coefficient is significantly enhanced by Gd doping, which will be beneficial for fast-switching spintronic devices. The Gd-Py alloy reveals obvious better control of the ST-FMR linewidth. The spin Hall angle of the Pt/Py-Gd system is largely improved compared with that of the Pt/Py system. Permalloy (Py) is a crucial component in spin nano-oscillators due to its excellent soft magnetic properties. Due to orbital angular momentum quenching, Py exhibits very low magnetic damping. It reduces intrinsic energy dissipation during precession, which is beneficial for lowering operational power consumption and enhancing the thermal stability of certain memory devices. But lower magnetic damping limits its application in fast-switching spintronic devices. Thus, in this work, the rare earth element Gd is introduced into Py to further enhance the spintronic performance of Py100−xGdx alloys. Through spin-torque ferromagnetic resonance measurements (ST-FMRs), the maximum spin Hall angle of the system was calculated to be 0.149 when x = 20, significantly exceeding that of 0.042 in the pure Py sample. Additionally, Gd doping significantly enhances the ability to modulate the magnitude of the linewidth. Also, as the Gd content in the alloy increased, the magnetic damping coefficient of the device gradually rose, reaching a peak in the sample with 17% Gd content. The maximum magnetic damping coefficient of the Py-Gd alloy was 0.051, representing an approximate 2.4-fold increase compared to that of pure Py. The findings of this study confirm that the use of rare-earth elements is highly effective in tuning the performance of spintronic devices and provide support for the development of highly efficient SOT devices. It is noted that the regulation of magnetic damping by Py-Gd holds significant implications for enhancing the magnetization switching speed of SOT devices and reducing the drive current density for microwave emission in spin nano-oscillators. [ABSTRACT FROM AUTHOR] |
| Copyright of Materials (1996-1944) is the property of MDPI 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.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 194907675 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Modulation of Electromagnetic Damping and Charge–Spin Conversion in Pt/Py 100−x Gd x Heterostructure. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Ju%2C+Hongzhan%22">Ju, Hongzhan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Jinxiang%22">Wu, Jinxiang</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhao%2C+Xiaotian%22">Zhao, Xiaotian</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> wliu@imr.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Long%22">Liu, Long</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> xtzhao@imr.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Wei%22">Liu, Wei</searchLink><relatesTo>2</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Jun2026, Vol. 19 Issue 12, p2601. 18p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Spintronics%22">Spintronics</searchLink><br /><searchLink fieldCode="DE" term="%22Spin+Hall+effect%22">Spin Hall effect</searchLink><br /><searchLink fieldCode="DE" term="%22Ferromagnetic+resonance%22">Ferromagnetic resonance</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+relaxation%22">Magnetic relaxation</searchLink><br /><searchLink fieldCode="DE" term="%22Gadolinium+compounds%22">Gadolinium compounds</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Highlights: Gd doped in Py fabricated by magnetron sputtering and magnetic properties in Pt/Py-Gd films. The magnetic damping coefficient is significantly enhanced by Gd doping, which will be beneficial for fast-switching spintronic devices. The Gd-Py alloy reveals obvious better control of the ST-FMR linewidth. The spin Hall angle of the Pt/Py-Gd system is largely improved compared with that of the Pt/Py system. Permalloy (Py) is a crucial component in spin nano-oscillators due to its excellent soft magnetic properties. Due to orbital angular momentum quenching, Py exhibits very low magnetic damping. It reduces intrinsic energy dissipation during precession, which is beneficial for lowering operational power consumption and enhancing the thermal stability of certain memory devices. But lower magnetic damping limits its application in fast-switching spintronic devices. Thus, in this work, the rare earth element Gd is introduced into Py to further enhance the spintronic performance of Py100−xGdx alloys. Through spin-torque ferromagnetic resonance measurements (ST-FMRs), the maximum spin Hall angle of the system was calculated to be 0.149 when x = 20, significantly exceeding that of 0.042 in the pure Py sample. Additionally, Gd doping significantly enhances the ability to modulate the magnitude of the linewidth. Also, as the Gd content in the alloy increased, the magnetic damping coefficient of the device gradually rose, reaching a peak in the sample with 17% Gd content. The maximum magnetic damping coefficient of the Py-Gd alloy was 0.051, representing an approximate 2.4-fold increase compared to that of pure Py. The findings of this study confirm that the use of rare-earth elements is highly effective in tuning the performance of spintronic devices and provide support for the development of highly efficient SOT devices. It is noted that the regulation of magnetic damping by Py-Gd holds significant implications for enhancing the magnetization switching speed of SOT devices and reducing the drive current density for microwave emission in spin nano-oscillators. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Materials (1996-1944) is the property of MDPI 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: 10.3390/ma19122601 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 18 StartPage: 2601 Subjects: – SubjectFull: Spintronics Type: general – SubjectFull: Spin Hall effect Type: general – SubjectFull: Ferromagnetic resonance Type: general – SubjectFull: Magnetic relaxation Type: general – SubjectFull: Gadolinium compounds Type: general Titles: – TitleFull: Modulation of Electromagnetic Damping and Charge–Spin Conversion in Pt/Py 100−x Gd x Heterostructure. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Ju, Hongzhan – PersonEntity: Name: NameFull: Wu, Jinxiang – PersonEntity: Name: NameFull: Zhao, Xiaotian – PersonEntity: Name: NameFull: Liu, Long – PersonEntity: Name: NameFull: Liu, Wei IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 06 Text: Jun2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 19961944 Numbering: – Type: volume Value: 19 – Type: issue Value: 12 Titles: – TitleFull: Materials (1996-1944) Type: main |
| ResultId | 1 |
