Production method of dielectric particles

A production method of dielectric particles;

• comprising the steps of:
• preparing titanium dioxide particles having a rutile ratio of 30% or lower and a BET specific surface area of 20 m2/g or more;
• preparing barium carbonate particles having a BET specific surface area of 10 m2/g or more;
• preparing mixed powder by mixing titanium dioxide particles and barium carbonate particles;
• performing a first heat treatment step for performing a heat treatment on the mixed powder to generate a barium titanate phase on surfaces of titanium dioxide particles;
• and
• performing a second heat treatment step for performing a heat treatment at 800° C. to 1000° C. after the first heat treatment step, wherein a heat treatment temperature in the first heat treatment step is lower than a heat treatment temperature in the second heat treatment step, and a sufficient time is secured for a reaction to convert at least 15 wt % of mixed powder after the first heat treatment step to barium titanate and generating a barium titanate phase having an average thickness of at least 3 nm on surfaces of titanium dioxide particles.