Patent ID: 9172026
Filing Date: 2015-10-27
Classification: C01G,C04B,G01N,H01L

Abstract:
1. A piezoceramic composition containing a crystalline phase of a perovskite structure having a main single phase signified as formula ABO 3 , with element A consisting of one or more elements selected from among K (potassium), Na (sodium) and Li (lithium) and with element B consisting of one or more elements selected from among Nb (niobium), Ta (tantalum) and Sb (antimony), and wherein a Reitveld Analysis is conducted by obtaining an X-ray diffraction profile of a powder sample of the piezoceramic composition that is crushed until the particles of the piezoceramic composition are 10 μm or less in diameter, the X-ray diffraction profile having a diffraction peak indicating the presence of the main single phase as well as a heterogeneous phase of a crystalline structure signified as formula A