The preparation method comprises the following steps: 1. lanthanum and calcium modified lead titanate ferroelectric thin film is precipitated on a substrate;
制备方法：一、在基底上沉积钛酸铅镧钙系铁电薄膜；
The preparation method comprises the following steps: 1. lanthanum and calcium modified lead titanate ferroelectric thin film is precipitated on a substrate;
制备方法：一、在基底上沉积钛酸铅镧钙系铁电薄膜；
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