Formulation of energy loss due to magnetostriction to design ultraefficient soft magnets
Abstract The mechanism of energy loss due to magnetostriction in soft magnetic materials was analytically formulated, and our experiments validated this formulation. The viscosity of magnetic materials causes the resistive force acting on magnetic domain walls through strain due to magnetostriction,...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2024-03-01
|
| Series: | NPG Asia Materials |
| Online Access: | https://doi.org/10.1038/s41427-024-00538-8 |
| _version_ | 1797233457517035520 |
|---|---|
| author | Hiroshi Tsukahara Haodong Huang Kiyonori Suzuki Kanta Ono |
| author_facet | Hiroshi Tsukahara Haodong Huang Kiyonori Suzuki Kanta Ono |
| author_sort | Hiroshi Tsukahara |
| collection | DOAJ |
| description | Abstract The mechanism of energy loss due to magnetostriction in soft magnetic materials was analytically formulated, and our experiments validated this formulation. The viscosity of magnetic materials causes the resistive force acting on magnetic domain walls through strain due to magnetostriction, and magnetic energy is eventually dissipated by friction even without eddy currents. This energy loss mechanism explains the frequency dependence of the excess loss observed in the experiments, and the excess loss is dominated by the contribution of magnetostriction when the magnetostriction constant exceeds approximately 20 ppm. The random anisotropy model was extended by considering the effect of local magnetostriction as a correction to the magnetocrystalline anisotropy. The effect of magnetostriction was considerably suppressed by the exchange-averaging effect. The estimated effective random magnetoelastic anisotropy for nanocrystalline α-Fe reached as low as 18.6 J/m3, but this static effect could not explain the high excess loss at high frequencies observed in the experiments. The results of this research could provide new design criteria for high-performance soft magnetic materials based on low magnetostriction to reduce the excess loss. |
| first_indexed | 2024-04-24T16:16:29Z |
| format | Article |
| id | doaj.art-5cfce84126f4478cb47baa57c38925f5 |
| institution | Directory Open Access Journal |
| issn | 1884-4057 |
| language | English |
| last_indexed | 2024-04-24T16:16:29Z |
| publishDate | 2024-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | NPG Asia Materials |
| spelling | doaj.art-5cfce84126f4478cb47baa57c38925f52024-03-31T11:24:14ZengNature PortfolioNPG Asia Materials1884-40572024-03-0116111210.1038/s41427-024-00538-8Formulation of energy loss due to magnetostriction to design ultraefficient soft magnetsHiroshi Tsukahara0Haodong Huang1Kiyonori Suzuki2Kanta Ono3Department of Applied Physics, Osaka UniversityDepartment of Materials Science and Engineering, Monash UniversityDepartment of Materials Science and Engineering, Monash UniversityDepartment of Applied Physics, Osaka UniversityAbstract The mechanism of energy loss due to magnetostriction in soft magnetic materials was analytically formulated, and our experiments validated this formulation. The viscosity of magnetic materials causes the resistive force acting on magnetic domain walls through strain due to magnetostriction, and magnetic energy is eventually dissipated by friction even without eddy currents. This energy loss mechanism explains the frequency dependence of the excess loss observed in the experiments, and the excess loss is dominated by the contribution of magnetostriction when the magnetostriction constant exceeds approximately 20 ppm. The random anisotropy model was extended by considering the effect of local magnetostriction as a correction to the magnetocrystalline anisotropy. The effect of magnetostriction was considerably suppressed by the exchange-averaging effect. The estimated effective random magnetoelastic anisotropy for nanocrystalline α-Fe reached as low as 18.6 J/m3, but this static effect could not explain the high excess loss at high frequencies observed in the experiments. The results of this research could provide new design criteria for high-performance soft magnetic materials based on low magnetostriction to reduce the excess loss.https://doi.org/10.1038/s41427-024-00538-8 |
| spellingShingle | Hiroshi Tsukahara Haodong Huang Kiyonori Suzuki Kanta Ono Formulation of energy loss due to magnetostriction to design ultraefficient soft magnets NPG Asia Materials |
| title | Formulation of energy loss due to magnetostriction to design ultraefficient soft magnets |
| title_full | Formulation of energy loss due to magnetostriction to design ultraefficient soft magnets |
| title_fullStr | Formulation of energy loss due to magnetostriction to design ultraefficient soft magnets |
| title_full_unstemmed | Formulation of energy loss due to magnetostriction to design ultraefficient soft magnets |
| title_short | Formulation of energy loss due to magnetostriction to design ultraefficient soft magnets |
| title_sort | formulation of energy loss due to magnetostriction to design ultraefficient soft magnets |
| url | https://doi.org/10.1038/s41427-024-00538-8 |
| work_keys_str_mv | AT hiroshitsukahara formulationofenergylossduetomagnetostrictiontodesignultraefficientsoftmagnets AT haodonghuang formulationofenergylossduetomagnetostrictiontodesignultraefficientsoftmagnets AT kiyonorisuzuki formulationofenergylossduetomagnetostrictiontodesignultraefficientsoftmagnets AT kantaono formulationofenergylossduetomagnetostrictiontodesignultraefficientsoftmagnets |