Ceramic Magnets Wikipedia

A ferrite is a ceramic material made by mixing and firing large proportions of iron iii oxide fe 2 o 3 rust blended with small proportions of one or more additional metallic elements such as barium manganese nickel and zinc.

Ceramic magnets wikipedia.

Many ferrites are spinels with the formula ab 2 o 4 where a and b represent various metal cations usually including iron. They are composed of iron oxide and strontium carbonate. The tube is embraced between the poles of two horseshoe shaped alnico magnets top bottom which create a magnetic field along the axis of the tube the microwaves are emitted from the waveguide aperture top which in use is attached to a waveguide conducting the microwaves to the radar antenna. While their hard brittle quality and low energy exclude them from some applications ceramic magnets have won wide acceptance due to their corrosion and demagnetization.

They are electrically nonconductive meaning that they are insulators and ferrimagnetic meaning they can easily be magnetized or attracted to a magnet. Some elements such as carbon or silicon may be considered ceramics ceramic materials are brittle hard strong in compression and weak in shearing and tension. They withstand chemical erosion that occurs in other materials subjected to acidic or caustic environments. A ceramic material is an inorganic non metallic often crystalline oxide nitride or carbide material.

A magnet is a material or object that produces a magnetic field this magnetic field is invisible but is responsible for the most notable property of a magnet. Ferrites are chemical compounds ceramic with iron iii oxide fe 2 o 3 as their principal components many of them are magnetic materials and they are used to make permanent magnets ferrite cores for transformers and in various other high tech applications. A magnetic cartridge more commonly called a phonograph cartridge or phono cartridge or colloquially a pickup is an electromechanical transducer that is used to play records on a turntable. The cartridge contains a removable or permanently mounted stylus the tip usually a gemstone such as diamond or sapphire of which makes physical contact with the record s groove.

Rare earth magnets are strong permanent magnets made from alloys of rare earth elements developed in the 1970s and 1980s rare earth magnets are the strongest type of permanent magnets made producing significantly stronger magnetic fields than other types such as ferrite or alnico magnets. A permanent magnet is an object made from a material that is magnetized and creates its own persistent magnetic field. The magnetic field typically produced by rare earth magnets can exceed 1 4 teslas whereas ferrite or.