Post-neodymium magnets that possess high heat resistance, coercivity, and (BH)max are desired for future-generation motors. However, the candidate materials post-neodymium such as Sm2Fe17N3 metastable magnetic alloys have certain process-related problems: low sinterability due to thermal decomposition at elevated temperatures, deterioration of coercivity during sintering, poor raw powder. Vario...

The finite element micromagnetic simulation is used to study the role of complex composition 2:17R-cell boundaries in realization magnetization reversal processes (Sm, Zr)(Co, Cu, Fe)z alloys intended for high-energy permanent magnets. A modified sandwich model considered combinations 2:7R/1:5H phase and 5:19R/1:5H layers as alloy structure. results represented form coercive force vs. total wid...

Three-dimensional micromagnetic simulations are used to study the effect of crystallographic textures on the magnetic properties of uniaxial nanocrystalline films of hard magnetic materials with arbitrary grain shapes and size distributions. The correlation lengths ~effective ferromagnetic exchange interaction radius and domain wall width! are assumed to be smaller than the typical grain size. ...

We investigate degenerate saddle point problems, which can be viewed as limit cases of standard mixed formulations of symmetric problems with large jumps in coefficients. We prove that they are well-posed in a standard norm despite the degeneracy. By wellposedness we mean a stable dependence of the solution on the right-hand side. A known approach of splitting the saddle point problem into sepa...

The authors have investigated the correlation between magnetic properties, growth structure, and internal stress of epitaxially grown Co35Pd65 alloy films on Cu–Si(100) in the alloy thickness range from 1 monolayer (ML) to 10 ML. An in situ surface magneto-optical Kerr effects (SMOKE) study revealed that Co35Pd65 alloy films showed room-temperature ferromagnetism at a coverage of 2 ML with a st...