| 摘要 |
PROBLEM TO BE SOLVED: To provide a sheet-like wave absorber which has high wave absorption characteristics, with respect to unrequired electromagnetic waves in a frequency region 'GHz' higher than that of 'MHz', such as 'millimeter waves' or 'mirowaves', and in which manufacturing steps or instillation works are simple. SOLUTION: A wave absorber is obtained by blending hard magnetic powders. Powders have needle-like shopes, with the long diameter being 0.03 to 0.3 μm, the short diameter being 0.01 to 0.10 μm, and Hc being 500 Oe or higher. |
