Abstract
Using X-ray magnetic circular dichroism (XMCD), effective magnetic moments for Co and Mn in Co 78− x Mn x B 10Si 12 amorphous alloys were estimated in order to explain the different magnetic states found in the amorphous alloy depending on the Mn content. As the Mn content was increased, the Co–Mn amorphous alloy changed from a ferromagnet to a paramagnet and then to a mictomagnetic state ( x = 30 at%) at room temperature. When x > 25 at%, a reentrant spin glass behavior was also observed below 50 K. XMCD analysis showed that the magnetic moments for both Co and Mn were severely reduced by the structural disorder. It was also found that the Mn–Mn pair exchange interaction was ferromagnetic, regardless of the composition (up to 30 at%); hence, antiferromagnetic J CoMn exchange interaction is believed to be responsible for the reentrant spin glass behavior as well as the mictomagnetic state observed for the alloys with high Mn content.
Sign-in/Register to access full text options 
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.
