One-step synthesis of BaTiO3/CaTiO3 core-shell nanocubes by hydrothermal reaction

Journal of Asian Ceramic Societies

Yung-Chang Lin¹  Kazumi Kato¹  Hiroki Itasaka¹  Zheng Liu¹  Ken-ichi Mimura¹  Kazu Suenaga¹ 

[1] National Institute of Advanced Industrial Science and Technology (AIST);

关键词: hydrothermal synthesis;    nanocube;    core-shell structure;    heterointerfaces;    piezoelectrics;   

DOI  :  10.1080/21870764.2020.1868081

来源: DOAJ

【 摘 要 】

Novel cube-shaped nanocrystals of BaTiO3 (BT) surrounded by CaTiO3 (CT) that can be used for piezo-driven energy harvesters were synthesized using a one-step hydrothermal reaction with surfactant and additives at 250°C for 24 h. The size distribution of the nanocubes (NCs) was narrow, with an approximate average size of 50 ~ 60 nm. The nanocubes had a core-shell configuration, such that the Pbnm structured CT shell was grown on a P4mm structured BT core by sharing corresponding [001] directions. STEM-EDX and EELS indicated that Ba ions did not diffuse into the CT shell region. Piezoelectric hysteresis loops of BT/CT NCs were obtained by piezoresponse force microscopy.

【 授权许可】

Unknown