The difference between rare earth magnets and ceramic magnets

Magnets are objects that generate magnetic fields. These magnetic fields allow magnets to attract certain metals from a distance without touching them. Some magnets occur naturally, while others are man-made. While there are many different types of magnets, two of the most popular man-made magnets are ceramic magnets and neodymium magnets.

For years all magnets were natural magnets such as lodestone, a naturally magnetic iron ore. In 1952 magnets were made out of ceramic for the first time. By making magnets out of ceramic, engineers were able to make magnets into any shape they wanted. By making the ceramic magnets out of carefully created mixtures, more powerful magnet fields than were possible in nature could be generated. Ceramic magnets were less expensive and more powerful and quickly became popular. Ceramic magnets are also called hard ceramic magnets or ferric magnets. They are made from strontium or barium ferrite.

There are two types of rare-earth magnets: samarium cobalt (SmCo) and neodymium-iron-boron (NdFeB). SmCo and NdFeB magnets are called “rare earth” because they are made from the rare earth, or lanthanide series, of the periodic table of elements.

SmCo magnets were developed in the 1970s and were the first of the rare-earth magnets to be produced. NdFeB magnets became available to buy in 1984.

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