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Insight into influence of thermodynamic coefficients on transient negative capacitance in Zr-doped HfO 2 ferroelectric capacitors
Ist Teil von
Chinese physics B, 2021-12, Vol.30 (12), p.127701
Erscheinungsjahr
2021
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
We study the influence of the thermodynamic coefficients on transient negative capacitance for the Zr-doped HfO
2
(HZO) ferroelectric capacitors by the theoretical simulation based on the Landau–Khalatnikov (L-K) theory and experimental measurement of electrical properties in the resistor-ferroelectric capacitor (
R
-FEC) circuit. Our results show that the thermodynamic coefficients
α
,
β
and
γ
also play a key role for the transient NC effect besides the viscosity coefficient and series resistor. Moreover, the smaller coefficients
α
and
β
, the more significant the transient NC effect. In addition, we also find that the thermodynamic process of transient NC does not obey the generally accepted viewpoint of Gibbs free energy minimization.