HIGH-TEMPERATURE LEAD-FREE FERROELECTRIC MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a lead-free material having ferroelectricity even in a temperature range higher than a Curie temperature of PZT.SOLUTION: A ferroelectric material is expressed by the chemical formula (SrBa)NbO(0.20≤x≤0.32) and is used in a use environment of a temperature higher than 320°C. The ferroelectric material can be produced by spark plasma sintering method and the like.SELECTED DRAWING: Figure 2