Ferrite Magnets Disc for Crafts Refrigerator or Whiteboard

Dot Magnets ideal for photo magnets, Whiteboard Magnet,magnetic photo frames, chalkboard, white, dry erase boards, magnetic pages, decoration fridge magnets, cuttable picture magnets, magnetic picture clips, wall magnetic paper, refrigerator magnets, magnetic buttons, magnets for bulletin board, notes, maps, postcards, notes, paper, sticker, calendars, office supplies etc.

How to make a Permanent Ferrite Magnet?

First development of ferrite magnet(also called Ceramic Magnet) started in the 40’s, but they have been offering in the market since the 50’s.

Permanent Ferrite Magnets are obtained from iron oxides and from strontium or barium carbonate: these raw materials are generous on Earth, so availability of ferrite is rather high.

The raw materials are mixed together, granulated and thermally treated to get finally hexaferrite phase (SrFe12O19 or BaFe12O19). This granulate is then ground to a powder.Pressing can be performed under magnetic field (to maximize anisotropy of the magnet) or not (isotropic ferrite magnets) and can be wet or dry. 

Features & Benefits

Raw material is readily available and low in cost

Relatively brittle & hard

Easy to magnetize and good resistance to demagnetization

Excellent corrosion resistance

Good temperature stability

high coercive force and high electric resistance

Most widely used permanent magnets

Applications

Hard Ferrite Magnet has a wide variety of applications: Speaker Magnets, DC Motors, Sweepers, Magnetic Separators for ferrous materials, Automotive Sensors, MRI’s, Reed Switching, Hall Effect Devices, in Assemblies such as (separating, holding, lifting, retrieving, and latching), Refrigerator Magnets and Arts and Crafts as well as many other novelty applications.