Time tuning of ferroelectric film varactors under pulse voltages

Significant difference in the capacitance tunability of paraelectric state ferroelectric capacitors under dc and pulse voltages is demonstrated. Along with a fast tuning ( τ < 10 ns ) the slow relaxation processes ( τ ⩾ 100 s ) responsible for up to ∼ 30 % variation of the capacitance were observ...

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Bibliographic Details
Published in:Applied physics letters 2007-07, Vol.91 (2), p.022905-022905-3
Main Authors: Kozyrev, Andrey B., Osadchy, Vitaly N., Kosmin, Dmitry M., Tumarkin, Andrey V., Kaydanova, Tatiana, Ginley, David
Format: Article
Language:English
Subjects:
CAPACITANCE
CAPACITORS
MATERIALS SCIENCE
RELAXATION
SOLAR ENERGY
Solar Energy - Photovoltaics
TUNING
VARIABLE CAPACITANCE DIODES
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Summary:Significant difference in the capacitance tunability of paraelectric state ferroelectric capacitors under dc and pulse voltages is demonstrated. Along with a fast tuning ( τ < 10 ns ) the slow relaxation processes ( τ ⩾ 100 s ) responsible for up to ∼ 30 % variation of the capacitance were observed. The observed effect is a main obstacle for application of paraelectric state ferroelectrics on microwaves.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2756126