| Download | - View final version: Simultaneous three-axis torque measurements of micromagnetism (PDF, 5.4 MiB)
- View supplementary information: Simultaneous three-axis torque measurements of micromagnetism (PDF, 1.2 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1063/9.0000106 |
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| Author | Search for: Fast, K. R.; Search for: Thibault, J. A.; Search for: Sauer, V. T. K.; Search for: Dunsmore, M. G.ORCID identifier: https://orcid.org/0000-0003-1120-4896; Search for: Kav, A.; Search for: Losby, J. E.1; Search for: Diao, Z.; Search for: Luber, E. J.; Search for: Belov, M.1ORCID identifier: https://orcid.org/0000-0002-6097-7126; Search for: Freeman, M. R.ORCID identifier: https://orcid.org/0000-0002-6607-6521 |
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| Affiliation | - National Research Council of Canada. Nanotechnology
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| Format | Text, Article |
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| Subject | magnetic hysteresis; alloys; magnetic anisotropy; thin films; torque measurement; numerical methods; micromechanics; sensors; thermomechanical analysis; magnetic materials |
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| Abstract | Measurements of magnetic torque are most commonly preformed about a single axis or component of torque. Such measurements are very useful for hysteresis measurements of thin film structures in particular, where high shape anisotropy yields a near-proportionality of in-plane magnetic moment and the magnetic torque along the perpendicular in-plane axis. A technique to measure the full magnetic torque vector (three orthogonal torque components) on micro- and nano-scale magnetic materials is introduced. The method is demonstrated using a modified, single-paddle silicon-on-insulator resonant torque sensor. The mechanical compliances to all three orthogonal torque components are maximized by clamping the sensor at a single point. Mechanically-resonant AC torques are driven by an RF field containing a frequency component for each fundamental torsional mode of the device, and the resulting displacements read out through optical position-sensitive detection. Measurements are compared against micromagnetic simulations of mechanical torque to augment the interpretation of the signals. As an application example, simultaneous observations of hysteresis in the net magnetization along with the field-dependent in-plane anisotropy is highly beneficial for studies of exchange bias. |
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| Publication date | 2021-01-08 |
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| Publisher | American Institute of Physics |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | NRC-NANO-175 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 835d7d50-5e47-41c5-bb88-e9e500163881 |
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| Record created | 2021-05-28 |
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| Record modified | 2021-08-11 |
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