Dielectric material showing polarization twist, dielectric structure capable of controlling polarization, capacitor and piezoelectric element using the same, ceramic, and capacitor and piezoelectric element using the same

摘要

Problem to be solved: to provide a dielectric material showing polarization twist, a dielectric structure capable of controlling polarization, a capacitor and a piezoelectric element using the same, and a ceramic and a capacitor and a piezoelectric element using the same.Solution: the concentration of vacancies at the site X of anions X introduced by A-site vacancies missing at the a site of cubic or quasi cubic vertices is less thanFor the cubic or quasi cubic crystal axesAn octahedron of an anion present in a perovskite structure ω AndThe angle by applying an electric field ω Both of the polarization values changeA dielectric material showing polarization twist.General formula(A1 (1-x +) δ）／ 2A2 (1-x-3) δ）／ 2a3x square δ） BO3The amount of A-site pores indicated by the ceramic δ The combination of X and A3 with X is adjusted to control the properties of the ceramics.Diagram