FIELD: chemistry.
SUBSTANCE: invention relates to piezoelectric ceramic materials based on sodium and potassium niobates and can be used in mid-frequency radioelectronic devices operating in receiving mode, including transducers of ultrasonic transmitters. The piezoelectric ceramic material based on sodium and potassium niobates contains Na2O, K2O, Nb2O5, Li2O, Ta2O5, Sb2O5 and NiO, with the following ratio of components, wt %: Na2O - 8.49-8.67; K2O - 11.00-11.25; Nb2O5 - 60.68-61.98; Li2O - 0.49-0.65; Ta2O5 - 11.20-11.44; Sb2O5 - 5.33-7.15; NiO - 0.82-0.83.
EFFECT: low mechanical Q-factor, high piezoelectric modulus, piezoelectric sensitivity, specific sensitivity and electromechanical coupling factor.
3 ex, 5 tbl
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RU2751323C1 |
Authors
Dates
2013-11-20—Published
2011-11-09—Filed