Influences of composition on magenetostriction of Fe-Sm alloy thin films prepared by D.C. magnetron sputtering process were investigated. Composition of formed film was ranged from 24 to 59 at%Sm. Negative, that is, compressive magnetostriction was observed of FeSm thin films. The magenetostriction of thin films was varied with composition rate of Fe-Sm alloy. The giant magnetostriction (GM) over 1000 ppm at 1200 kA/m was observed from 24 to 34 at%Sm for Fe-Sm amorphous film. The limited value of GM at 1200 kA/m was 1280 ppm of Fe-29.3 at%Sm alloy film.

Influences of electron beam irradiation on impact fracture energy were studied for soda glass. The irradiation, which was one of short time treatments of dry process at low temperature below boiling point of water, increased the impact value of soda glass. The impact value enhancement can be explained by stress relaxation induced by increase in free volume related to dangling bonds.

An effect of electron beam irradiation on mist resistance was studied for transparent polycarbonate resin. The electron beam irradiation decreased the time to clear vision on the misted samples. The treatment showed the mist resistance of the resin. To discuss the effect of electron beam on mist resistance, the water wettability, inducated by the surface energy, was evaluated by using contact angle of sessile drop. The electron beam enhanced the surface energy. Based on the heterogeneous nucleation theory, the effects of electron beam on the mist resistance were discussed.

Effects of electron beam (EB) irradiation on bending stress_ strain curve were studied for soda glass. The stress_ strain curves were measured by standard bending test. EB irradiation enhanced bending fracture stress and rigidity and then also en hanced the crack length of homogeneously fractured sample. The enhancements were mainly explained by the enlargement of bonding energy for silicon_ oxygen atomic pair in atomic network structure of soda glass. The enlargement was probably induced by relaxation of the network structure, when EB irradiation generated the dangling bonds at the weaker bonded metal_ oxygen atomic pairs in the network structure.

To study the effects of electron beam (EB) irradiation on the bending stress-strain curves for soda glass, we measured these curves by a standard bending test. EB irradiation enhanced bending fracture stress and rigidity of the glass, and also extended the crack length of a homogeneously fractured sample. When the EB irradiation generated dangling bonds at the weaker-bonded metal-oxygen atomic pairs in the soda glass network structure, partial relaxation occurred at points of residual strain in the network structure. Evidently the increased rigidity was mainly due to an increase in the bonding energy for the silicon-oxygen atomic pairs in the atomic network structure. The irradiation also eliminated the crack origin points in the homogeneously fractured soda glass, thus inducing a high fracture stress.