Ferrites are high resistivity materials made by compacting MnZn or NiZn plus iron oxides. They derive their magnetic properties by a complex interaction of metallic and nonmetallic elements. They are available as bars, toroids, pot cores, etc. They are used in inductors, transformers, etc by the power electronics industry.
MnZn (MnxZn1-xFe2O4 ) ferrites have higher saturation induction (up to 0.5 T). Their permeability is high (mu = 500 to 20,000). But their resistivity is low. So Mn Zn ferrites are used up to 1.5 MHz.
NiZn (NixZn1-xFe2O4) ferrites offer lower saturation (< 0.35T). Their permeability is low (mu = 10 to 2000). But their resistivity is high. So NiZn Ferrites are used in the 1 MHz to 0.5 GHz range.
Version 6 stores both B(H) and Core Loss properties of each grade in a single excel file. MagWeb’s Ferrites Folder has 288 excel grade files listing magnetic properties of these materials, produced by 6 manufacturers. They contain 88 B(H) magnetization data sets and 200 core loss data sets. For a full list of all these grades, please click the searchable ‘Steels List’ on the home page.
Data in Version 6 also exploited a novel data smoother. It is not unusual for measured data to be rough. Rough data can slow solution convergence. To prevent such slowdown, MagWeb locates all rough spots in all raw data and spot-cleans them. Version 6 also extrapolated all smoothed data to saturation. You can download Saturation Flux Density Js of thousands of Grades from SMAG – Materials link.
By downloading this folder you will have 288 files on the magnetic properties of all ferrites produced worldwide!
Please review the Steels Handbook for more technical information of ferrite powder core materials.
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