High magnetic properties

Exchange coupled behaviour was found in bilayer films of SmCo/CoFe, nanocomposites [97, 98], Liu et al. [99] reported high magnetic properties in Sm-Co/Co and Pr-Co/Co sputtered multilayers (juqHc = 4.5 T). Adjusting the fraction of the soft phase was realised by varying the Co-layer thickness. 

Ferridex , a dextran-coated SPIO nanoparticle, simply labels islets by coincubation for more than 24 hours at a nanoparticle concentration of 250 pg/ml [23]. Since SPIO nanoparticles have highly magnetic properties, labeled islets... 

Magnetic Nickel-iron cobalt mixtures High-permeability materials Very high magnetic properties and... 

Spinel ferrites, isostmctural with the mineral spinel [1302-67-6] MgAl204, combine interesting soft magnetic properties with a relatively high electrical resistivity. The latter permits low eddy current losses in a-c appHcations, and based on this feature spinel ferrites have largely replaced the iron-based core materials in the r-f range. The main representatives are MnZn-ferrites (frequencies up to about 1 MH2) and NiZn-ferrites (frequencies 1 MHz). 

With respect to magnetic properties, the intrinsic magnetic susceptibiHty of pure chrysotile is very weak. However, the presence of associated minerals such as magnetite, as weU as substitution ions (Fe, Mn), increases the magnetic susceptibiHty to values around 6 x 10 m /kg. With amphiboles, the magnetic susceptibiHty is much higher, mainly because of the high iron content typically, amosite and crocidoHte exhibit susceptibiHty values of 100 and 75 X 10 m /kg, respectively (23). 

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