|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Advanced Magnetic Materials for Energy and Power Conversion Applications
||Nitrogenation of Nd1-xZrxFe10Si2 with the ThMn12-type Structure as a Candidate Alloy for Permanent Magnets
||Andrés Martín-Cid, David Mérida, Margarit Gjoka, Daniel Salazar, Jose Manuel Barandiaran, Dimitris Niarchos, George Hadjipanayis
|On-Site Speaker (Planned)
Tetragonal R(Fe,M)12 compounds (R=rare earth), with the ThMn12 structure, are good candidates as permanent magnet materials with reduced R content. However, some stability issues have to be overcome. Typical stabilizing elements (Ti, V, Mo…) have a preference for the occupation of the 8i site in the structure, while Si has a preference for the 8j and 8f sites, leaving the 8i site (with the largest moment for the ThMn12 structure) occupied by Fe, so the RFe10Si2 shows higher saturation magnetization than other substituted analogue (~130 Am2/kg). However, the reduced value of its Curie temperature and anisotropy limits its applicability. It is known that nitrogenation of ThMn12 type of alloys enhances the Curie temperature and the anisotropy field. Here we report for the first time the successful nitrogenation of an Nd1-xZrxFe10Si2Nz (x=0.4-0.6 and z<2.5) alloy with an enhancement of 100% in µ0Ha (5.4 T) and 26% in Tc (380 şC).
||Planned: Supplemental Proceedings volume