| 摘要 |
<p>An ultrasonic probe comprising a piezoelectric single crystal having the composition of formula (I) with high piezoelectric constant, low temperature coefficient and good electromechanical properties has a high piezoelectric constant and a broad bandwidth in a high frequency region:x(A)y(B)z(C)-p(P)n(N) (I)wherein, (A) is Pb(Mg1/3Nb2/3)O3 or Pb(Zn1/3 ,Nb2/3 )O3 ,(B) is PbTiO3, (C) is LiTaO3, (P) is a metal selected from Pt, Au, Ag, Pd and Rh, (N) is an oxide of a metal selected from Ni, Co, Fe, Sr, Sc, Ru, Cu and Cd, x is a number of 0.65 to 0.98, y is a number of 0.01 to 0.34, z is a number of 0.01 to 0.1, p is a number of 0.01 to 5, and n is a number in the range of 0.01 to 5.</p> |
