Ferrite Magnets Typical Physical Properties
This table outlines the key physical properties of Ferrite magnets. There are a number of technical attributes listed in the table. For clarification on the definition of some of the terms used please refer to the glossary document in our FAQ. Ferrite, or ceramic magnets as they are also known, are a low cost alternative to Neodymium magnets. They provide less magnetic power than some other magnets, Rare Earth magnets in particular, however they excel in some environments. If you are looking for a magnet which can withstand high operating temperatures or a humid environment then Ferrite magnets are ideal.
Common applications for Ferrite Magnets
Ferrite magnets are commonly found in magnetic devices, particularly those that are designed to have a large magnetic surface. These include an array of industrial magnetic devices such as magnetic tool holders and magnetic sweepers. Ferrite magnets provide a deeper magnetic field than Rare Earth magnets. This means their magnetic field is able to attract ferrous materials from further away. They have an effective strength to cost ratio, making them an appealing option for manufacturers.
The humble fridge magnet is another place you will see Ferrite magnets employed with good reason. Why use more expensive Neodymiums when you can use a cheaper alternative such as Ferrites. This is particularly the case when considered as a unit of cost per volume of magnet. Why pay for a magnet with higher strength if it is not required for the application.
Ferrite magnet production
Ferrites are produced through a sintered process. They are made from a composite of materials including iron oxide and barium carbonate or strontium carbonate. The materials are sintered, which is a process of compacting fine ceramic magnetic power into a dye which is fused using heat. This forms a solid material which is less brittle than Neodymium magnets.
Although Ferrite magnets are not as strong as Neodymium magnets, they are a suitable alternative in many instances. They offer stability, with high resistance to corrosion and heat. Ferret magnets are also cost-effective and are available in a wide variety of shapes and dimensions. Ferrite magnets are produced in a range of shapes and dimensions. The most common shapes include disc magnets, block magnets, cylinder magnets, ring magnets and pot magnets.