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The new system of (BNKLT-x/y) lead-free piezoelectric ceramics, which were prepared by using conventional oxide mixing processing, were invented in our group. The ceramics show excellent piezoelectric and ferroelectric properties: d33=231 pC/N, kP=41.0%, kt=50.5%, Pr=40.2 muC/cm2, and Ec=2.47 kV/mm, respectively. The dependence of P-E loops on temperature reveals that the depolarization temperature...
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