Abstract
Some materials exhibit a huge response to an applied field, the phenomenon being closely related to the mesoscopic hetero-phase fluctuation in materials. It has been revealed that the phenomenon is ubiquitous and is found in variety of materials such as martensitic alloys, dielectric relaxors, colossal magneto-resistance materials and so on. The response characteristics may be termed“super-susceptibility”. Examples of the phenomenon and the computer simulation using the time-dependent Ginzburg-Landau theory are reviewed.
