Domain control and periodic poling of epitaxial ScAlN

Fengyan Yang; Fengyan Yang; Ding Wang; Ping Wang; Juanjuan Lu; Zetian Mi; Hong X. Tang Tang

Domain control and periodic poling of epitaxial ScAlN

Applied Physics 2023-08-16 v2

Authors: Fengyan Yang , Fengyan Yang , Ding Wang , Ping Wang , Juanjuan Lu , Zetian Mi , Hong X. Tang Tang

Abstract

ScAlN is an emerging ferroelectric material that possesses large band gap, strong piezoelectricity, and holds great promises for enhanced \chi^{(2)} nonliearity. In this study, we demonstrate high-fidelity ferroelectric domain switching and periodic poling of Al-polar ScAlN thin film epitaxially grown on on c-axis sapphire substrate using gallium nitride as a buffer layer. Uniform poling of ScAlN with periods ranging from 2 um to 0.4 um is realized. The ability to lithographically control the polarization of epitaxial ScAlN presents a critical advance for its further exploitation in ferroelectric storage and nonlinear optics applications.

Keywords

scaln ferroelectric domain switching periodic poling epitaxial thin film nonlinear optics ferroelectric storage

Cite

@article{arxiv.2307.00708,
  title  = {Domain control and periodic poling of epitaxial ScAlN},
  author = {Fengyan Yang and Fengyan Yang and Ding Wang and Ping Wang and Juanjuan Lu and Zetian Mi and Hong X. Tang Tang},
  journal= {arXiv preprint arXiv:2307.00708},
  year   = {2023}
}

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3 pages, 3 figures

Domain control and periodic poling of epitaxial ScAlN

Abstract

Keywords

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