采用固相反应的方法系统地研究了BZN稳定PZN基陶瓷的相结构与介电性能.随着BZN含量的增加,PZN-BZN陶瓷中钙钛矿相的稳定性增强,居里温度近似呈线性下降,室温介电常数和介质损耗随也显著降低,最小值分别为380和0.002.为获得100%钙钛矿结构的PZN基陶瓷所需BZN的最小用量为8mol%～10mol%,当BZN的mol%超过15mol%时,PZN基陶瓷中钙钛矿相所占的百分比不再受烧结工艺的影响,基本保持100%.1kHz时Pb0.9Ba0.1Zn1/3Nb2/3O3陶瓷的最大介电常数Kmax=8680,tgδ=0.02,相应的居里温度Tm为24℃.
Phase structure and dielectric properties of barium zinc niobate (BZN) stabilizing lead zinc niobate based (PZN) ceramics prepared by the solid state reaction were systematically investigated in this work. With the addition of BZN, the stabilization of perovskite phase of PZN-BZN ceramics increase, but Curie temperature for different compositions PZN-BZN ceramics decrease linearly in the rough, room dielectric constants and dielectric losses (1kHz) also decrease remarkly, the minimum value is up to380 and 0.002, respectively. The minimum amount of BZN modifier needed is 8mol% ～10mol%for obtaining 100% perovskite structure PZN-BZN ceramics. When BZN content in PZN-BZN ceramics is more than 15mol%, the percentage of the perovskite phase is not limited by the conditions of sintering processing. Good dielectric properties were obtained for the composition of0.90PZN-0.10BZN: The maximum dielectric constant (εmax) and dielectric loss (tgδ) and is 8680 and 0. 027, respectively. Curie temperature is 24℃, Correspondingly.
参考文献
| [1] | Shrout T R;Hallival A .[J].American Ceramic Society Bulletin,1987,66:704. |
| [2] | Yokomizo Y;Takahashi T;Nomura S .[J].Journal of the Physical Society of Japan,1970,28:1278. |
| [3] | Swartz S L;Shrout T R .[J].Materials Research Bulletin,1982,17:1245. |
| [4] | Swartz S L;Shrout T R .[J].Materials Research Bulletin,1983,18:663. |
| [5] | Lejeune M;Boilot J P .[J].American Ceramic Society Bulletin,1985,64(04):679. |
| [6] | Swartz S L;Shrout T R;Schulze W A et al.[J].Journal of the American Ceramic Society,1984,67:311. |
| [7] | Kang SG.;Lee JK.;Kim H. .STABILIZATION OF THE PEROVSKITE PHASE IN PB(ZN-1/3, NB-2/3)O-3 CERAMICS MODIFIED BY BA(ZN-1/3, NB-2/3)O-3 AND BATIO3[J].Journal of Materials Science,1997(20):5377-5381. |
| [8] | Kang S G;Kim H;Takahashi K et al.[J].Japanese Journal of Applied Physics,1994,33:5407. |
| [9] | Nomura S;Arima H .[J].Japanese Journal of Applied Physics,1972,11(03):358. |
| [10] | Hallival A;Kumar U;Newnham R E et al.[J].American Ceramic Society Bulletin,1987,66:671. |
| [11] | Villegas M.;Caballero A.C. .Influence of Processing Parameters on the Sintering and Electrical Properties of Pb(Zn_(1/3)Nb_(2/3))O_3-Based Ceramics[J].Journal of the American Ceramic Society,2000(1):141-146. |
| [12] | Sekar MMA.;Halliyal A. .Low-temperature synthesis, characterization, and properties of lead-based ferroelectric niobates[J].Journal of the American Ceramic Society,1998(2):380-388. |
| [13] | Belsick J R;Halliyal A;Kumar U et al.[J].American Ceramic Society Bulletin,1987,66:664. |
| [14] | Hanh L;Nomura S .[J].Japanese Journal of Applied Physics,1976,15(06):1058. |
| [15] | Lu X L;Chen X M .[J].Journal of Electroceramics,2001,7:127. |
| [16] | Uchino K;Nomura S .[J].Ferroelectrics Letters,1982,44:55. |
| [17] | Smolenskii G A .[J].Journal of the Physical Society of Japan,1970,28:26. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%