抄録
A composite consisting of the powder of Bi system and resin was produced to discuss the absorption effect on the X band microwave. Prior to the production of the absorber, the method of measuring, calculating and thickness on the material constant were discussed, followed by the preparation of the material. Then, the absorption performance for the microwave was evaluated. The experimental results showed that the composite produced tends to increase the reflection loss in accordance with the increase of the content of the powder of the system at room temperature. On the other hand, it weas found that the composite does not absorb the microwave at the temperature of liquid nitrogen because of its superdiamagnetism. Then, it was concluded that the composite prepared can be used as the microwave absorber at room temperature while it can be used as the shielding medium of the microwave at the temperature of liquid nitrogen.
