Patent ID: 7736433

Claim:
A method for manufacturing BaTiO 3 —PbTiO 3 monocrystal comprising the following steps of: providing a BaTiO 3 —PbTiO 3 sintered substance having a smaller Pb content mole number than Ba content mole number, the range of the mole ratio of elements contained in the sintered substance being 0.9900<(Ba+Pb)/Ti<1.0000; coupling the {100} plane, {110} plane, or {111} plane of BaTiO 3 monocrystal or BaTiO 3 —PbTiO 3 monocrystal which is a seed crystal to the sintered substance; and heating the sintered substance to which BaTiO 3 monocrystal or BaTiO 3 —PbTiO 3 monocrystal is coupled, while keeping a non-molten condition within a temperature range of 1,280° C. or more and 1,400° C. or less.