Ceramic and method of manufacturing the same, dielectric capacitor, semiconductor device, and element
A method of manufacturing a ceramic includes forming a film which includes a complex oxide material having an oxygen octahedral structure and a paraelectric material having a catalytic effect for the complex oxide material in a mixed state, and performing a heat treatment to the film, wherein the paraelectric material is one of a layered catalytic substance which includes Si in the constituent elements and a layered catalytic substance which includes Si and Ge in the constituent elements. The heat treatment includes sintering and post-annealing. At least the post-annealing is performed in a pressurized atmosphere including at least one of oxygen and ozone. A ceramic is a complex oxide having an oxygen octahedral structure, and has Si and Ge in the oxygen octahedral structure.
1. An actuator comprising:
a lower electrode, a ceramic film, and an upper electrode, wherein the ceramic film includes a complex oxide having Si in an oxygen octahedral structure,
wherein the ceramic film further includes a paraelectric oxide having an oxygen tetrahedral structure.
2. The actuator according to claim 1 , wherein at least part of the ceramic film has a column-shaped structure which is continuous between the upper electrode and the lower electrode.
3. The actuator according to claim 2 , wherein a diameter of the column-shaped structure is 1 to 50 nm.
4. The actuator according to claim 1 , wherein the Si in the oxygen octahedral structure has a coordination number of six.
5. The actuator according to claim 1 , wherein the complex oxide has a perovskite structure.
6. The actuator according to claim 1 , wherein the complex oxide has a bismuth-layer structure.
7. The actuator according to claim 1 , wherein the paraelectric oxide has Si in the oxygen tetrahedral structure.