Magnetic cores determining sizes

Using the LF method of determining the size of an MPP toroid, one determines the Magnetics core part number P/N 55930A2. The number of turns should be... 

The size and shape of nanoparticles must be adjusted for the desired application since, on the nanometer scale, magnetic properties such as saturation magnetization and magnetic anisotropy strongly size- and shape-dependent. In particular, Ms is greatly decreased with decreasing size of a superparamagnetic nanoparticle. As Ms directly determines the rj relaxivity, size control for the crystalline core is the key requirement. 

Fig. 1. Characteristics of PL-Magi nanoparticies typicai for core-sheii magnetic nanoparticies synthesized according to Subheading 3.1 of the protocoi. (a) TEM image. The scaie bar equais 50 nm, and the magnetite core size is of 5-12 nm. (b) Magnetization curve. Saturation magnetization of 34 emu g- or 82 emu (g Fe)-. (c) X-ray diffraction pattern. The average crystaiiite size determined from the broadening of the X-ray diffraction peak is of 10.6 nm...

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