|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Advanced Magnetic Materials: An FMD Symposium in Honor of Michael E. McHenry
||Preparation and Characterization Fe-Pt and Fe-Pt-M (M=B, SI) Microwires
||Valentina Zhukova, Ahmed Talaat, Juan Jpse del Val, Mihail Ipatov, Arcady Zhukov
|On-Site Speaker (Planned)
Studies of soft magnetic glass-coated ferromagnetic microwires have attracted considerable interest because of their reduced dimensionality and unexpensive fabrication method. In some cases magnetic hardening of microwires has been reported although preparation of microwires containing rare-earth metals is restricted.
We report on preparation and characterization of Fe64.7Pt33.3B2, Fe50Pt40Si10 and Fe50Pt50 glass-coated microwires. Samples Fe64.7Pt33.3B2 and Fe50Pt40Si10 present saturation at magnetic field considerably lower than Fe50Pt50 microwire. Coercivity of Fe64.7Pt33.3B2 at all measured temperatures is about 140 Oe. Fe50Pt50 microwires present lower coercivity (about 80 Oe). As-prepared Fe50Pt40Si10 microwires have the lowest coercivity (about 5 Oe) and present rectangular hysteresis loops. XRD picture of as-prepared Fe50Pt40Si10 microwires can be interpreted as a mixture of amorphous phase and some amount of crystalline FePt phase. Soft magnetic behavior of Fe50Pt40Si10 microwires must be attributed to larger content of amorphous phase. Other two microwires presented larger content of crystalline phases.
||Planned: None Selected