Advanced Hard and Soft Magnetic Materials:
J. M. D. Coey
Cambridge University Press, Nov 3, 1999 - Science - 629 pages
Many advances in magnetic materials have resulted from the ability to structure materials on an appropriate magnetic length strip. This is typically the exchange length or the domain wall width of a hard phase, but in either case the characteristic length scale is a few nanometers. As the dimensions of the grains in a magnetic nanostructure approach this limit, the magnetic properties become significantly different from those in bulk. More specifically, nanostructured materials significantly extend the range of available magnetic properties. A variety of materials processing issues centers on the need to control nucleation and crystal growth on a very small length scale. Additional issues focus on the nature of the grain boundaries and the exchange coupling across them. This book provides a comprehensive overview of developments in the field. Topics include: permanent magnet processing; intrinsic properties of permanent magnetic materials; nanoscale hard magnetism; permanent magnet applications; microstructure and micromagnetics; thin-film permanent magnets; fine-particle magnets; nanocrystalline antiferro- and ferrimagnets; ultrasoft nanocrystalline and amorphous materials and nanocrystalline magnetic thin films.
What people are saying - Write a review
We haven't found any reviews in the usual places.
Hydrogenation Disproportionation Desorption Recombination
Isotropic and Anisotropic NdFeB Magnet Developments
Praseodymium and NeodymiumBased Nanocrystalline Hard
70 other sections not shown
a-Fe amorphous amorphous phase anisotropy annealing temperature Appl applications atoms bonded magnets calculated coercive field composition compounds CoPt crystalline crystallization Curie temperature decrease demagnetization density domain walls effect electron energy product exchange coupling exchange interactions experimental Fe3B ferrite ferromagnetic Figure grain boundary hard magnetic hard phase heat hysteresis loops IEEE Trans images increase kA/m layer Magn magnetic field magnetic materials magnetic phase magnetic properties magnetization curves magnetocrystalline anisotropy magnetostriction measurements melt spinning melt-spun metal MGOe microscopy microstructure Mossbauer nanocomposite nanocrystalline nanoparticles NANOPERM nanostructure Nd2Fei4B NdFeB nucleation observed obtained parameters particles peaks permanent magnets Phys powder produced quenched range rare earth reduced remanence reversal ribbons room temperature sample saturation saturation magnetization shown in Fig shows sintered soft magnetic soft phase spectra structure substrate superparamagnetic surface technique thermal thickness thin films transmission electron microscopy values volume fraction X-ray diffraction