|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Advanced Magnetic Materials: An FMD Symposium in Honor of Michael E. McHenry
||First Order Reversal Curve (FORC) Analysis of Iron-Nickel Zinc Ferrite Nanocomposites
||Anit Giri, S. Lund, C. L. Dennis
|On-Site Speaker (Planned)
Fe-(Ni 0.5Zn0.5)Fe2O4 nanocomposite powders containing ~6% and ~65% iron were synthesized using a chemical method to combine the high saturation magnetization of iron with the high resistivity of ferrites for high frequency soft magnet applications. To study the distribution of magnetic properties, First Order Reversal Curve (FORC) measurements were performed on the as-prepared and annealed samples (523 K/6h and 573 K/12h) at 20K and the average bias field (HB), its distributions, and coercivity (Hc) distribution, were calculated. It was found that there is a broadening of HB and Hc distributions with increasing iron content. For the 65% iron sample, HB initially increased from 3.3 mT (unannealed sample) to 7.2 mT (523 K annealed sample) before decreasing to -0.4 mT (573 K annealed sample). This is expected to affect the high frequency behavior. Detailed results of the magnetic properties and FORC analysis for the unannealed and annealed samples will be presented.
||Planned: None Selected