| 摘要 |
PROBLEM TO BE SOLVED: To provide a pyroelectric material polarizing method and device capable of carrying out a treatment, by which each lot of the polarized pyroelectric material are nearly uniform in the amount of polarization regardless of the impurity concentration, compositional ratio, or amount of crystal defects of pyroelectric material, when pyroelectric material is polarized. SOLUTION: By having pyroelectric material 1 polarized through the application of voltage, a pair of probes 4a and 4b is brought into contact with the front and rear of the polarization checking part 3 of an non-product part 2 provided to the pyroelectric material 1 to apply voltage. A prescribed amount of charge flowing when a prescribed voltage is applied to the non-product part 2 is represented by a reference charge volume A, a charge volume B necessary for polarization inversion is set up from a target polarizability necessary for a product part 5, on the basis of the reference charge volume A of the unusable part 2, and a voltage is applied, until the desired charge volume is attained so as to form a single ferroelectric domain.
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