| abstract |
PROBLEM TO BE SOLVED: To provide a lead-free piezoelectric material having a good and stable piezoelectric constant and an excellent mechanical quality factor in a wide practical temperature range. SOLUTION: General formula (1): (Ba 1-x Ca x ) a (Ti 1-yz Sn y Zr z ) O 3 (0.050 ≦ x ≦ 0.200, 0.010 ≦ y ≦) 0.040, 0 ≦ z ≦ 0.040, where x ≧ 0.375 (y + z) +0.050. A is 0.9925 + b ≦ a ≦ 1.0025 + b.) And a piezoelectric material containing a first subcomponent made of Mn and a second subcomponent made of Mg, wherein the Mn content is b mol in terms of metal with respect to 1 mol of the metal oxide. Piezoelectric material in which 0.0048 ≦ b ≦ 0.0400 and the Mg content is 0.100 parts by weight or less (excluding 0 parts by weight) in terms of metal with respect to 100 parts by weight of the metal oxide. [Selection figure] None |