MAGNETIC SHEET

• Main Authors: UCHIYAMA RYOTA, MATSUNO KENICHIRO, HONJO YOSHIHIRO, ITO MAMORU, YADA YOSHIO, MATSUKAWA ATSUHITO, MURASE TAKU, SAKURAI YASUHIRO
• Format: Patent
• Language: English; Japanese
• Published: 15.06.2017
• Subjects: BASIC ELECTRIC ELEMENTS; CASTING; ELECTRICITY; INDUCTANCES; MAGNETS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; TRANSFORMERS; TRANSPORTING; WORKING METALLIC POWDER

PROBLEM TO BE SOLVED: To provide a magnetic sheet with high Q value and sheet surface resistance.SOLUTION: The magnetic sheet contains flat magnetic particles. The flat magnetic particles are made of an Fe-Si-Cr alloy. An oxygen film exists on a surface of the flat magnetic particle. When the thickness of the oxygen film is defined as a distance at which oxygen intensity halves from the outermost surface by Auger electron spectroscopy, the average thickness of the oxygen film is 3.5 to 6.0 nm.SELECTED DRAWING: Figure 2 【課題】Ｑ値およびシート表面抵抗が高い磁性シートを提供する。【解決手段】扁平状磁性体粒子を含む磁性シートである。扁平状磁性体粒子が、Ｆｅ−Ｓｉ−Ｃｒ系合金からなる。扁平状磁性体粒子の表面には、酸素膜が存在する。酸素膜の厚みを、オージェ電子分光で酸素強度が最表面から半減するまでの距離と定義する場合に、酸素膜の平均厚みが３．５〜６．０ｎｍである。【選択図】図２