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Magnetic carbon materials made by pyrolysis at around 1,000¡C are expected to be widely used in the future as magnetic, electric, and catalytic materials. Besides the multiple forms and electronic structures of carbons, magnetic carbon has special properties related to the radicals and hydrogen atoms generated during the pyrolysis process. The Institute has performed extensive experiments on the pyrolysis reaction of diverse organic compound monomers to find magnetic carbon materials suitable as toner for copiers and other business machines, an area of use with great promise for the future. It was found that the amorphousness of structures and the generation of magnetism are closely related, and the synthesis of magnetic material requiring only about 1/5 or 1/6 of the apparent room temperature saturation magnetization of metallic nickel was achieved. Even a magnetization value of such magnitude is sufficient for toner applications, and the material's commercial use will become feasible with mass production. Studies will continue to determine more precisely the material's structure and to create other new functions besides those related to magnetism.
Magnetic carbon materials adhered to a magnet |