Abstract
The 44.7Cu-20.6Mn-34.7Al(at. %) alloy in the composition range between the Heusler phase and the κ phase exhibits remarkably constricted hysteresis loops and high coercive force after annealing at about 300 °C. It has been found that this alloy shows displaced hysteresis loops at room temperature when cooled down from 350 °C in a magnetic field and that the hysteresis loops shift along the magnetization axis, not along the field axis, when the alloy is cooled to 77 K in a magnetic field. Broad rounded maxima of magnetization are observed at about 250 °C for the sample quenched from 380 °C in thermomagnetic measurements. The characteristics of the magnetic behavior are similar to those reported for mictomagnetic alloys, e.g., Cu-Mn alloys. The high coercive forces and the displaced and constricted hysteresis loops observed in the 44.7Cu-20.6Mn-34.7Al alloy are supposed to be attributed to the exchange anisotropy interactions between the ferromagnetic domains of the Heusler phase and the antiferromagnetic Mn-rich domains.
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.
