PROBLEM TO BE SOLVED: To provide heating soft magnetic powder for hyperthermia treatment giving high heating efficiency even by the application of an external AC magnetic field with a low frequency of about several tens KHz, and a heating composite body and a heating sheet using the same.SOLUTION: Provided is a heating soft magnetic powder for hyperthermia treatment characterized in that heating work volume [W] per unit weight [kg] is controlled to 0.50×10[H m/Kg] or higher by an index (ILP) obtained by being removed by the square of the frequency [Hz] of the applied magnetic field and the intensity [A/m] of the magnetic field. The heating composite body for hyperthermia treatment is characterized by mixing and dispersing the heating soft magnetic powder for hyperthermia treatment into a matrix material. Further, the heating sheet for hyperthermia treatment is characterized in that heating soft magnetic powder for hyperthermia treatment is mixed and orientation-dispersed into a sheet-shaped matrix material.SELECTED DRAWING: None【課題】 数十ｋＨｚ程度の低い周波数の外部交流磁場の印加でも高い発熱効率を与える温熱治療用の発熱軟磁性粉体、これを用いた発熱複合体及び発熱シートの提供。【解決手段】 温熱治療用発熱軟磁性粉体は、単位重量［ｋｇ］あたりの発熱仕事量［Ｗ］を印加磁場の周波数［Ｈｚ］及び磁場の強さ［Ａ／ｍ］の２乗で除した指標（ＩＬＰ）で０．５０×１０－９［Ｈ・ｍ２／ｋｇ］以上とすることを特徴とする。温熱治療用発熱複合体は、温熱治療用発熱軟磁性粉体をマトリクス材料に混合し分散させたことを特徴とする。また温熱治療用発熱シートは、温熱治療用発熱軟磁性粉体をシート状のマトリクス材料に混合し配向分散させたことを特徴とする。【選択図】なし
