| 摘要 |
<p>Disclosed is a bismuth lamellar compound expressed by a chemical formula, (M11-2xM2xBi4+x)Ti4O15, wherein "M1" is alkali earth metal including Sr at least, "M2" is alkaline metal, and "x" falls in a range, 0.06 </= x </= 0.44. "M1" can be replaced by Pb or combinations of Pb and alkali earth metal. The bismuth lamellar compound exhibits a less fluctuating sensitivity with respect to temperature variations. The bismuth lamellar compound can further include Mn in a form of MnO in an amount of from 0.02 to 0.25% by weight, and thereby it exhibits not only an upgraded sensitivity but also it hardly exhibits a hysteresis in a force-electric charge output diagram. <IMAGE></p> |
