Neutron diffraction study of piezoelectric material under cyclic electric field using event recording technique

イベント記録法を使用した中性子回折による周期的電場下における圧電材料の研究

川崎 卓郎   ; 伊藤 崇芳*; 稲村 泰弘  ; 中谷 健 ; Harjo, S.   ; Gong, W.; 岩橋 孝明; 相澤 一也  

Kawasaki, Takuro; Ito, Takayoshi*; Inamura, Yasuhiro; Nakatani, Takeshi; Harjo, S.; Gong, W.; Iwahashi, Takaaki; Aizawa, Kazuya

Event-recording system of MLF, J-PARC has an advantage for time-resolved measurement, because of "event" characteristic of the data. New techniques for time-resolved measurement and data reduction were developed. The responses of the structure and the lattice of piezoelectric materials to a cyclic electric field were chosen as the target to be investigated using this technique. The microscopic strains of the piezoelectric material in a stacking-type actuator under driving by the static and the cyclic electric fields were investigated using the engineering neutron diffractometer TAKUMI. The obtained data were reduced to the field-condition-resolved (time-resolved) diffraction patterns in the specific field conditions. The lattice strain and the domain characteristics of the material in each condition will be presented.