Strong enhancement of magnetic coercivity induced by uniaxial stress
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
| Accesso online: | |
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| _version_ | 1866914996452065280 |
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| author | Shen, Bin Breitner, Franziska Gegenwart, Philipp Jesche, Anton |
| author_facet | Shen, Bin Breitner, Franziska Gegenwart, Philipp Jesche, Anton |
| contents | The performance of permanent magnets is intricately tied to their magnetic hysteresis loop. In this study, we investigate the heavy-fermion ferromagnet CeAgSb$_2$ through magnetization measurements under uniaxial stress. We observe a 2400 % increase in magnetic coercivity with just a modest stress of approximately 1 kbar. This effect persists even after pressure release, attributable to stress-induced defects that efficiently pin domain walls. Other magnetic properties such as ordering temperature and saturation moment exhibit only weak pressure dependencies and display full reversibility. Our findings offer a promising route for increasing coercive field strength and enhancing the energy product in ferromagnetic materials and are potentially applicable to a broad spectrum of commercial or emerging magnetic applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_19320 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Strong enhancement of magnetic coercivity induced by uniaxial stress Shen, Bin Breitner, Franziska Gegenwart, Philipp Jesche, Anton Strongly Correlated Electrons Materials Science The performance of permanent magnets is intricately tied to their magnetic hysteresis loop. In this study, we investigate the heavy-fermion ferromagnet CeAgSb$_2$ through magnetization measurements under uniaxial stress. We observe a 2400 % increase in magnetic coercivity with just a modest stress of approximately 1 kbar. This effect persists even after pressure release, attributable to stress-induced defects that efficiently pin domain walls. Other magnetic properties such as ordering temperature and saturation moment exhibit only weak pressure dependencies and display full reversibility. Our findings offer a promising route for increasing coercive field strength and enhancing the energy product in ferromagnetic materials and are potentially applicable to a broad spectrum of commercial or emerging magnetic applications. |
| title | Strong enhancement of magnetic coercivity induced by uniaxial stress |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2404.19320 |