[22a-A311-1~9] 9.1 Dielectrics, ferroelectrics

10:45 AM - 11:00 AM JST(1:45 AM - 2:00 AM UTC)English Presentation

[22a-A311-7] Solvothermal synthesis of dispersible and size-controlled KNbO₃ nanocubes and the dielectric properties of their assembly

〇Piyush Sapkota¹, Yuma Yamada¹, Shunsuke Mochizuki¹, Hyunwook Nam¹, Ichiro Fujii¹, Satoshi Wada¹, Shintaro Ueno¹ (1.Univ. of Yamanashi)

Keywords:

Potassium niobate nanocubes

The 3D-ordered assembly of ferroelectric nanocubes such as BaTiO₃ has been reported to exhibit enhanced dielectric properties arising from strained interfaces of nanocubes. Owing to the similarity in the crystal structure and electrical properties, the KNbO₃-nanocube assembly is expected to exhibit enhanced dielectric and ferroelectric properties. However, the synthesis of dispersible and size-controlled KNbO₃ nanocubes for ordered assembly has rarely been reported. Therefore, this study was focused on the surfactant-free solvothermal synthesis of dispersible and size-controlled KNbO₃ nanocubes from K₄Nb₆O₁₇ precursors as the facile conversion into KNbO₃ from K₄Nb₆O₁₇ can be expected through a relatively minor rearrangement of NbO₆ units.