PZN-PMN-PT陶瓷的介电、压电性能

DIELECTRIC AND PIEZOELECT RIC PROPERTIES OF PZN- PMN- PT CERAMIC S

研究了 Ｐ Ｚ Ｎ Ｐ Ｍ Ｎ Ｐ Ｔ 陶瓷的介电、压电性能． 在 Ｐ Ｔ 物质的量分数为２３ ％ 附近存在一个准同型相界， 在此附近的配方具有较好的压电、介电性能． 热处理后， 材料的压电、介电性能均有较大的提高， Ｋｐ 从４１ ％ 提高到５１ ％ ， ｄ３３ 从３１９ｐ Ｃ／ Ｎ 提高到４１８ｐ Ｃ／ Ｎ， 而相对介电常数由１００１０

The dielectric and piezoelectric properties of P Z N P M N P T ceramics systems were studied . The results show that the dielectric and piezoelectric properties of the com position lying near the M P B arebetterthan those of other com positions . Large im provements in dielectric and piezoelectric properties werefound after annealing at 850 ℃for several hours , Kp and d33increased from 41 % and 319p C/ Nto 51 % and418p C/ N,respectively ,the relative maximum constant increased from 10010 to 14210 .