Crystallization of (Bi,Nd)4Ti3O12 films in N2 environment by chemical solution deposition
Source abstract
Abstract
(Bi,Nd)4Ti3O12 (BNT) ferroelectric films were deposited on Pt/Ti/SiO2/Si substrates by chemical solution deposition and crystallized in an N2 environment after pre-annealing in air at 500 °C. The effect of crystalline temperature on the structural and electrical properties of the BNT films was studied. The BNT films annealed in N2 in the temperature range of 630 °C to 670 °C were crystallized well and the average grain size increased with increasing crystalline temperature, while the remanent polarization and dielectric constant of the films are not a monotonic function of the crystalline temperature. The BNT films crystallized at 650 °C have the largest remanent polarization value of 2Pr=63.6 μC/cm2, a dielectric constant of 344 at 10 kHz, and a fatigue-free characteristic. A positive correlation between the remanent polarization and the dielectric constant of the BNT films has been observed.
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Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Microwave Dielectric Ceramics Synthesis · Acoustic Wave Resonator Technologies
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