[20p-F104-1~11] 9.1 Dielectrics, ferroelectrics

[20p-F104-6] Materials design on superlattice-structured perovskites
composed of metastable dielectric and ferroelectric materials

〇Miryo Kashiwazaki¹, Hisashi Maki¹, Yuki Kitanaka¹, Yuji Noguchi¹, Masaru Miyayama¹ (1.The Univ of Tokyo)

Keywords:ferroelectric, thin film

In recent years, strain engineering, which makes it possible to improve various physical properties by artificially applying stress by lattice mismatch, has been actively performed. In this reserch, we aim to construct material design guidances based on superlattice control of metastable dielectric and ferroelectric materials. Various physical properties were evaluated by preparing epitaxial alternating laminated thin films by BaTiO₃ as the ferroelectric model material, CaTiO₃ as the dielectric model material and Ca excess Ca-Ti-O as the metastable dielectric model material.