| 摘要 |
Process for the production of a piezoelectric body which contains a ferroelectric material which may be polarized in an aligned, permanent fashion and also contains a bonding material, the process comprises mixing a bonding material selected so that at least in a temperature range below the Curie temperature of the ferroelectric material, it has a specific electric conductivity sigma B > EC x sigma K/EB, where sigma K is the specific conductivity of the ferroelectric material, EC is the coercivity field strength of the ferroelectric material, and EB is the electric breakdown field strength of the bonding material with a granular ferroelectric material having a known Curie temperature, forming a desired body shape from such mixture, heating the resultant body to a temperature at least sufficient for the bonding material to exhibit its specific conductivity and applying an electric voltage of sufficient intensity to the body to produce a permanent polarization alignment in the ferroelectric material within such body. |
