Abstract
We report a systematic investigation of temperature dependent magnetic properties of FePt single and FePt(30)/M/Fe(5) nanocomposite thin films prepared by sputtering technique on low cost substrates at ambient temperature and post annealed at different temperatures. With increasing annealing temperature, L10 ordering, hard magnetic properties and thermal stability of FePt films are improved. The formation of interlayer exchange coupling between hard and soft magnetic layers in FePt/M(Al,Cu,C)/Fe films depends strongly on interlayer materials and interface morphology. A strong interlayer exchange coupling was achieved when the C interlayer thickness was about 0.5nm, which enhances saturation magnetization largely. Also, the magnetization reversal process changes from incoherent to coherent switching process, which results a single hysteresis loop. High temperature magnetic studies revealed that the effective reduction in the coercivity decreases from 34Oe/K to 13Oe/K by the introduction of a thin C(0.5nm) layer in FePt/C/Fe film. This reveals a promising approach to improve the stability of hard magnetic properties at high temperatures, suitable for high temperature magnetic applications.
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.
