from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of a group of nonmetallic, ceramiclike, usually ferromagnetic compounds of ferric oxide with other oxides, especially such a compound characterized by extremely high electrical resistivity and used in computer memory elements, permanent magnets, and various solid-state devices. Also called ferrate.
- n. Iron that has not combined with carbon, occurring commonly in steel, cast iron, and pig iron below 910°C.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. the interstitial solid solution of carbon in body-centered cubic iron
- n. any of a class of metal oxides which show ferrimagnetism; used in transformers, inductors, antennas, recording heads, microwave devices, motors and loudspeakers
- n. The anion FeO22-, and any of the salts (formally derived from the unknown ferrous acid) derived from it
from The Century Dictionary and Cyclopedia
- n. A term proposed by Vogelsang to include indeterminable mineral substances of a reddish color, frequently observed in certain igneous rocks when they are examined in thin sections under the microscope. They probably consist in most cases of hydrous oxid of iron.
- n. In chem.: A compound of ferric oxid (Fe2O3) with a more basic metallic oxid, as calcium ferrite (CaFe2O4), from the union of ferric oxid with lime (CaO). The mineral franklinite consists essentially of zinc ferrite, and magnetite or magnetic iron ore (Fe3O4) may be viewed as iron ferrite (FeO.Fe2O3).
- n. Pure iron as separated out (from iron carbides) in the cooling of steel.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a solid solution in which alpha iron is the solvent
Some strontium (10%) is used to make special magnets called ferrite ceramic magnets.
First of all, use what's called the ferrite bead on your wired headset.
It was established in 1935 to commercialize "ferrite," a key material in electronics and magnetics.
As Monzon explains, the kind of ferrite used in the new lens must exhibit a negative permeability in the GHz range, meaning that light waves passing through a flat lens will converge to an image.
If the core comprises high-resistivity material, such as ferrite, the eddy current is low, and eddy-current loss is insignificant in SMPS applications.
Too much or too little ferrite can make the steel brittle, weak or otherwise unsuitable for use in automobiles.
The engineers are running programs that show how adding tiny amounts of alloys to ferrite and martensite—crystalline structures of iron—during the steelmaking process changes the steel's strength, as well as its ability to be shaped into different parts.
Even if ‘doing it on his own’ involved nothing more strenuous than taking prepackaged parts from Radio Shack and soldering them together (seriously, have you even tried to wind your own ferrite variable coil?).
Fortunately a team from the University of Maryland has discovered a cleaner replacement for PZT, bismuth samarium ferrite (BSFO).
The first mainframe that I worked on had a whopping 64k of core based memory little doughnuts of magnetic ferrite on wires with destructive reads.