Comments on equilibrium thermodynamic approach to ferroic hysteresis

Abstract

The equilibrium thermodynamic approach to ferroic hysteresis was recalled firstly, especially according to the ferroelectric case. Then based on the uniqueness of equilibrium state, it was showed that a ferroic hysteresis loop is composed of stationary states but not equilibrium ones, especially according to the ferromagnetic case. So, it was concluded that the equilibrium thermodynamic approach to ferroic hysteresis is not reliable. Life-force should be bestowed on the domain structure dynamic approach and the non-equilibrium thermodynamic approach.

Keywords:

• Ferroics
• hysteresis
• thermodynamics
• uniqueness of equilibrium state

Additional information

Funding

The work is supported by the Natural Science Foundation Program of Shandong Province of China (Grant No. ZR2016AL09).