Room-temperature coercivity enhancement in mechanically alloyed antiferromagnetic-ferromagnetic powders
The coercivity,HC, and squareness of Co powders have been enhanced at room temperature by mechanically alloying them with antiferromagneticpowders with Néel temperature, TN, above room temperature. The enhancement is maximum after field annealing above TN. The existence of loop shifts and the depend...
| Autores: | , , , , , |
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| Formato: | artículo |
| Fecha de publicación: | 1999 |
| País: | España |
| Recursos: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:ddd.uab.cat:116278 |
| Acesso em linha: | https://ddd.uab.cat/record/116278 https://dx.doi.org/urn:doi:10.1063/1.125269 |
| Access Level: | acceso abierto |
| Palavra-chave: | Powders Annealing Antiferromagnetism Coercive force Alloys Exchange interactions Temperature measurement |
| Resumo: | The coercivity,HC, and squareness of Co powders have been enhanced at room temperature by mechanically alloying them with antiferromagneticpowders with Néel temperature, TN, above room temperature. The enhancement is maximum after field annealing above TN. The existence of loop shifts and the dependence of HC on the annealing and measuring temperatures indicate that exchange bias effects are responsible for this behavior. |
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