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Different Materials Used in Magnetic Therapy Magnets by JR Thomas
Regarding the manufacture of biomagnetic therapy products and devices, there are, in fact, a variety of different materials that manufacturers regularly utilize. The specific material that a magnet is made of can have a direct affect on the strength of its electromagnetic field. Also, some materials are more suitable for specific purposes.
Here is a list of the five most commonly used materials that manufacturers use as part of their products and devices:
Hematite is a naturally occurring magnetic substance which is a mineral form of iron oxide. Hematite beads are very popular, and very often found used as beads for magnetic therapy necklaces and bracelets. These strands of beads can be readily found in fashionable beaded hematite belts, bracelets, necklaces, and a whole variety of magnetic jewelry types. A unique aspect of hematite, as opposed to the other magnet types, is that the jewelry itself is magnetic when using hematite, as opposed to the magnetic field being generated by a magnet inserted as a separate component of a therapy product.
Ceramic is a material used for magnets that is commonly found in products and devices like therapy wraps, mattress pads, and cushions. The typical therapy magnet made of ceramic and found in a biomagnetic therapy product will, generally, generate a gauss rating of about 1000 at its surface. This is connected to its size and thickness.
Flexible rubber is most often used when the ability to be easily formed into different shapes, like strips or sheets, is required. Because of their high flexibility, a good example of how they are often utilized is for therapy insoles for the treatment of foot issues. As a general rule, products and devices that use these magnets will have a measurement anywhere from 100-500 gauss, varying with thickness and size.
Neodymium magnets are usually much more powerful than either flexible or ceramic magnets. They are widely avaiable, and very commonly found used in magnetic therapy jewelry, like bracelets and necklaces, and as medical spot magnets which are generally attached directly over and injured part of the body, such as a joint. An average gauss rating for the typical neodymium magnet will generally measure in a range from 1000-3000. This field strength has a rough correlation with how thick the magnet is.
Samarium cobalt as a material for magnets is most often reserved to be used for creating more expensieve, high-quality magnetic jewelry. Products made of this material are generally much more expensive than products made with the other magnet types utilized for medical magnet products. Magnets made of this also have a tendency to be somewhat brittle. A typical magnet composed of samarium cobalt used as part of a piece of magnetic jewelry will probably have a gauss measurment similar to a neodymium magnet - with a range between 1000-3000 gauss. This also generally correlates to an individual magnet's thickness and size.
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For more information about magnetic therapy, please visit Biomagnetic Therapy Products, Magnetic Therapy Research or Using Magnetic Therapy Spot Magnets
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