Patent ID: 8518290
Filing Date: 2013-08-27
Classification: C04B,H01L

Abstract:
1. A piezoelectric material comprising a tungsten bronze structure oxide represented by the general formula (I): wherein A comprises at least barium and bismuth and may further comprise alkali earth metals, silver, and combinations thereof; A′ comprises at least strontium and barium and may further comprise at least one element selected from Group II elements, Group III elements (including lanthanoid), bismuth, and silver; B and B′ comprise at least niobium and may further comprise at least one element selected from magnesium, transition elements in Group III to Group XI, zinc, metal elements in Group XIII, and tin; and a represents 0.06<a<0.8, x represents 4≦x≦6, and x′ represents 4≦x′≦6 and 4≦ax+(1−a)x′<6, and wherein the tungsten bronze structure oxide represented by A