Correlation between the microstructure and enhanced room temperature coercivity in ball milled ferromagnetic-antiferromagnetic composites

J. Sort, J. Nogués, X. Amils, S. Suriñach, J. S. Muñoz, M. D. Baró

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)

Abstract

Ball milling a metallic ferromagnet (Co) with an oxide antiferromagnet (NiO) produces a microstructure consisting of ferromagnetic lamellae separated by antiferromagnetic particles. Due to its large antiferromagnetic - ferromagnetic interface this microstructure induces an exchange interaction when the samples are field cooled from above the antiferromagnetic Neel temperature. This interface exchange interaction results in a substantial enhancement of the room temperature coercivity of the ferromagnetic phase.
Original languageEnglish
JournalMaterials Science Forum
Volume343
Publication statusPublished - 1 Jan 2000

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