Abstract
Exchange bias (EB) and EB training effect have been studied in Ni/NiO nanocomposites, in which a negative EB field of about 2.2 kOe at 5 K is achieved in as-milled Ni/NiO powders upon cooling in a field of 10 kOe. The coercivity of the Ni nanoparticles is significantly enhanced by coupling with NiO. The EB training effect is activated by consecutive application of magnetic hysteresis loops. Besides the FM/AFM interfacial interaction and bulk AFM domain-state model, the model presented by Hoffmann may play an important role to induce such a beneficial initial spin configuration for a typical EB training effect system. Furthermore, a phenomenological relaxation model proposed by Binek is used to describe the next spin configurational relaxation process of AFM interface magnetization towards equilibrium.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
