Elinvar effect in Co-doped TiNi strain glass alloys

Elinvar effect is observed in non-magnetic Co doped TiNi strain glass alloys. The Elinvar effect is explained by the coupling of dynamic size effect and size dependence of elastic modulus. The appearance of Elinvar effect is highly correlated with the nucleation size, so that only for strain glass with high point defect concentration, Elinvar effect can be observed. Due to the generality of size dependence of elastic modulus, Elinvar effect is expected to be observed in many other strain glass materials, which points out a way to find new Elinvar materials.