Results of the experimental studies mainly from the structural view point on the electron-phonon interaction in various molybdenum oxides and bronzes are reported. The Peierls transition and the CDW sliding motion in blue bronzes are studied by neutron and X ray techniques and NMR. A competition between CDW and superconductivity in MonO3n-1 and molybdenum purple bronzes are observed. The anomalous resistivity upturn followed by the occurrence of the super-conductivity with decreasing temperature observed in Li0.9Mo6O17 is discussed in relation to Anderson localization.
It has been known that a shape memory alloy usually undergoes small thermal hysteresis upon martensitic and reverse transformations. In the present report it is shown that a Fe-Mn-Si alloy containing proper amounts of Mn and Si exhibits a complete shape memory effect of a one way type with the temperature hysteresis as large as 500 K. Characteristic features controlling the shape memory effect by γ _??_ε transformation are discussed in the light of the development of the Fe-Mn-Si alloy as a cost saving shape memory alloy.