Patent ID: 8877520

Claim:
A method for manufacturing a ferroelectric film, comprising the steps of: forming a burnable material film containing hydrogen of not less than 1% by weight on a substrate; forming an amorphous thin film including a ferroelectric material on said burnable material film; and oxidizing and crystallizing said amorphous thin film while supplying hydrogen to said amorphous thin film by burning said burnable material film through heating of said burnable material film and said amorphous thin film in an oxygen atmosphere, to thereby form a first ferroelectric film on said substrate, wherein: said first ferroelectric film includes a perovskite structure oxide; said first ferroelectric film is oriented in any of (001), (001)+(110), (110), (110)+(111), and (111), when said amorphous thin film is heated in an oxygen atmosphere, by increase in an oxygen supply amount, as a pressurized oxygen atmosphere; a pressure of the pressurized oxygen atmosphere when said first ferroelectric film is oriented in (001) is lower than a pressure of the pressurized oxygen atmosphere when said first ferroelectric film is oriented in (001)+(110); a pressure of the pressurized oxygen atmosphere when said first ferroelectric film is oriented in (001)+(110) is lower than a pressure of the pressurized oxygen atmosphere when said first ferroelectric film is oriented in (110); a pressure of the pressurized oxygen atmosphere when said first ferroelectric film is oriented in (110) is lower than a pressure of the pressurized oxygen atmosphere when said first ferroelectric film is oriented in (110)+(111); and a pressure of the pressurized oxygen atmosphere when said first ferroelectric film is oriented in (110)+(111) is lower than a pressure of the pressurized oxygen atmosphere when said first ferroelectric film is oriented in (111).