Experimental evidence that electrical fatigue failure obeys a generalized Coffin–Manson law

Abstract

The empirical Coffin-Manson law has been used to characterize the low-cycle mechanical fatigue failure of metallic materials for decades. Our experimental studies reported in this letter have shown that the electrical fatigue failure in dielectrics can be well described by a fitting function having the same mathematical expression as that of the Coffin-Manson law. This observation indicates that the physical mechanism beneath the formation and evolution of atomic disordered structures, the key factor influencing both mechanical and electrical fatigue, might be the same.

Evaluation of ferroelectric profile of poly(vinylidene fluoride‐co‐trifluoroethylene) (P(VDF‐TrFE)) thin films by positive‐up–negative‐down and fatigue measurement

“…Extensive studies have been devoted to this topic but the origin of fatigue in ferroelectrics is still questionable. 11 Hence one of the aims of this work is to investigate the switching and non-switching behavior of poly(vinylidene fluoride-cotrifluoroethylene) (P(VDF-TrFE)) thin films using detailed ferroelectric measurements. The behavior of switching polarization and leakage before and after fatigue has been observed and its correlation with the crystallinity of the thin films has been drawn.…”

“…In this phenomenon, electric polarization decreases with an increasing number of electric field cycles. Extensive studies have been devoted to this topic but the origin of fatigue in ferroelectrics is still questionable 11 . Hence one of the aims of this work is to investigate the switching and non‐switching behavior of poly(vinylidene fluoride‐ co ‐trifluoroethylene) (P(VDF‐TrFE)) thin films using detailed ferroelectric measurements.…”