Ceramic dielectric and method of manufacturing the same and ceramic electronic component and electronic device

A method of manufacturing a ceramic dielectric, comprising:

• heat-treating a barium precursor or a strontium precursor, a titanium precursor, and a donor element precursor to obtain a conducting or semiconducting oxide,
• preparing a mixture comprising the conducting or semiconducting oxide and a liquid-phase acceptor element precursor,
• supplying a liquid-phase sintering agent to the mixture, and
• sintering the mixture to form a ceramic dielectric,
• wherein the ceramic dielectric comprises a plurality of grains and a grain boundary between adjacent grains and being continuously connected,
• the plurality of grains comprising the conducting or semiconducting oxide, and
• the grain boundary comprises an insulating oxide comprising an acceptor element derived from the liquid-phase acceptor element precursor.