A radio wave absorbent capable of absorbing radiowaves in the space saving and efficient manner and capable of coping with up to high frequency bands, as well as a manufacturing method thereof are provided. In a radio wave absorbent in which magnetic particles comprising a soft magnetic metal material...http://www.google.com/patents/US6503963?utm_source=gb-gplus-sharePatent US6503963 - Radiowave absorbent and manufacturing method thereof