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Magnetic Materials (Appendix To Advanced Magnetic Nanostructures [2006]), David J. Sellmyer, Ralph Skomski
Magnetic Materials (Appendix To Advanced Magnetic Nanostructures [2006]), David J. Sellmyer, Ralph Skomski
Ralph Skomski Publications
The behavior of magnetic nanostructures reflects both nanoscale features, such as particle size and geometry, and the intrinsic properties of the magnetic substances. For example, the magnetization reversal in nanodots crucially depends on the anisotropy of the dot material. Furthermore, nanostructures are often used as bulk materials, so that their extrinsic properties must be evaluated from the point of view of bulk materials. This appendix summarizes the characteristics of some important classes of magnetic materials and provides exemplary data.
Nanomagnetic Models, Ralph Skomski, Jian Zhou
Nanomagnetic Models, Ralph Skomski, Jian Zhou
Ralph Skomski Publications
The atomic-scale and mesoscopic physics of magnetic nanostructures is reviewed. Emphasis is on the description of magnetic phenomena and properties by analytical models, as contrasted to numerical approaches. Nanostructuring affects the magnetic properties on different length scales, from a few interatomic distances for intrinsic properties such as magnetization and anisotropy to more than 10 nm for extrinsic properties, such as coercivity. The consideration includes static and dynamic mechanisms, as well as nanoscale finite-temperature effects. Some explicitly discussed examples are Curie- temperature changes due to nanostructuring, the effect of narrow and constricted walls, the potential use of magnetic nanodots for finite-temperature …