Observation of recoil magnetization curves outside the major loop in Co, Fe, and Ni films
| Autor: | Geshev, Julian Penkov, Garcia, Wagner Jesus da Silva, Paes, Vagner Zeizer Carvalho, Azeredo, Lucas Felipe Santos de, Dorneles, Lucio Strazzabosco, Andrade, Antonio Marcos Helgueira de |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Repositório Institucional da UFRGS Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
| Popis: | We report a peculiar magnetization reversal observed in magnetron-sputtered Co, Fe, and Ni films. We found that some recoil (minor) magnetization curves lie entirely and way outside the major loop, a phenomenon referred to here as a recoil-curve overshoot. The greatly enhanced recoil curve’s remanence and coercivity result in an up to 2.5-fold increase of loop’s area. The model of pairs of exchange-coupled grains with misaligned anisotropy axes reproduces, in a very good agreement with the experiment, all key features of the recoil-curve overshoot as well as the kink that some major loops present before saturation. The disclosed features of the ferromagnetic hysteresis provide further insights into this important classical phenomenon. |
| Databáze: | OpenAIRE |
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