|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)<SUB>12</SUB> compounds (R=rare earth), with the ThMn<SUB>12</SUB> 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 ThMn<SUB>12</SUB> structure) occupied by Fe, so the RFe<SUB>10</SUB>Si<SUB>2</SUB> shows higher saturation magnetization than other substituted analogue (~130 Am<SUP>2</SUP>/kg). However, the reduced value of its Curie temperature and anisotropy limits its applicability. It is known that nitrogenation of ThMn<SUB>12</SUB> type of alloys enhances the Curie temperature and the anisotropy field. Here we report for the first time the successful nitrogenation of an Nd<SUB>1-x</SUB>Zr<SUB>x</SUB>Fe<SUB>10</SUB>Si<SUB>2</SUB>N<SUB>z</SUB> (x=0.4-0.6 and z<2.5) alloy with an enhancement of 100% in µ<SUB>0</SUB>Ha (5.4 T) and 26% in Tc (380 şC).
||Planned: Supplemental Proceedings volume