Abstract
The influence of internal stresses on magnetic properties of Ni-Mn-Ga glass-coated microwire was investigated. Microwires with Ni63Mn12Ga25 chemical composition, full diameter D = 54.6 μm and metallic nucleus diameter d = 26.7 μm, were prepared by Taylor-Ulitovsky technique. An analysis of a separate influence of stresses, generated during the solidification of metal and those induced by the difference between thermal expansion coefficients of metal and glass, on magnetic properties of Ni-Mn-Ga microwire was done. Carrying out the heat treatment for a different time reveals the influence of the first type of stress. Removing the glass coating show the influence of the second type of stress. To analyze a complex influence of stresses we performed a heat treatment of the microwire after glass coating removal. The coercive force, saturation and remanence magnetization and Curie temperature were compared to show stresses influence. The change of easy magnetization axis direction was found for microwire with removed glass coating. A difference in surface grain size was indicated in the annealed glass-coated microwire and microwire, annealed after glass removal.
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.
