Chemical design of barium titanate thin films for nanophotonic devices
Minmin Zhu,
Xianrong Zhang,
Can Wei
et al.
Abstract:High‐performance electro‐optic (EO) materials greatly enhance modulators and switches in various photonic applications. We investigate the evolution of the tolerance factor (t) and EO coefficient (rc) in A‐site and B‐site doped BaTiO3 (BT) thin films. Our analysis reveals that cation transmutation has a remarkable impact on their dielectric constant, spontaneous polarization, optical band gap, and EO coefficient. Notably, Pb‐doped BT samples exhibit an even higher rc value of 336.5 pm/V, representing a nearly … Show more
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