Inducing Electrically Hard Character in Ternary [Pb(Mg1/3Nb2/3)O3, Pb(Yb1/2Nb1/2)O3, PbTiO3] Piezoceramics by Mn Doping

Öz

In this study, dielectric and electromechanical properties of Mn doped Pb(Mg1/3Nb2/3)O3Pb(Yb1/2Nb1/2)O3-PbTiO3 (PMN-PYbN-PT) based piezoceramics were studied. Fully pervskite and 98% dense 0,2875PMN-0,2875PYbN-0,425PT ceramics modified with 1 mol% MnCO3 were fabricated after sintering at 1100˚C. εTk had εT48% and Tc = 280˚C. The addition of Mn resulted in decreasing tanδ and increasing Qm. Acceptor Mn2+/Mn3+ ions presumably substituted B-site ions in the center of oxygen octahedral of perovskite structure; therefore, some defect dipole pairs were formed. The electrically “hard” character were induced as a result of the domain wall motoin pinning due to the existing defect pairs, which resulted in decreased dielectric and mechanical losses. In summary, Mn doped 0,2875PMN-0,2875PYbN-0,425PT piezoceramics with “hard” character are good potential for device applications working under heavy electrical and mechanical stresses

Anahtar Kelimeler

• Perovskite
• Dielectric and Electromechanical Properties
• Hard Character

Üç Bileşenli [Pb(Mg1/3Nb2/3)O3, Pb(Yb1/2Nb1/2)O3, PbTiO3] Piezoseramiklerine Mn İlavesi İle Elektriksel Sert Karakter Kazandırılması

Öz

Bu çalışmada Mn ile katkılanmış Pb(Mg1/3Nb2/3)O3-Pb(Yb1/2Nb1/2)O3-PbTiO3 (PMN-PYbN-PT) esaslı piezoseramiklerin dielektrik ve elektromekanik özellikleri araştırılmıştır. %1 mol MnCO3 içeren 0,2875PMN-0,2875PYbN-0,425PT kompozisyonu 1100˚C’de sinterlenerek üretilmiştir. %98 göreceli yoğunluğa ve tamamen perovskit faza sahip bu numunelerin εTpC/N, d31 = -103 pC/N, Qm = 467, kp = %40, k31 = %24, k33 = %49 ve Tc = 275˚C olarak ölçülmüştür. Benzer özellikler Mn katkısı yapılmamış ve 1000˚C’de sinterlenerek üretilmiş numunelerde εT2380, tanδ = %1,95, d280˚C olarak ölçülmüştür. Mn ilavesi nedeniyle özellikle sistemdeki tanδ azalmış, Qm ise artmıştır. Muhtemelen Mn2+/Mn3+ iyonları perovskit yapıdaki oksijen oktahedralin merkezindeki B-konumu iyonları ile yer değiştirerek alıcı (acceptor) iyon olarak davranmaktadır ve kusur çiftleri oluşturmaktadır. Bu kusur çiftleri ise yapıdaki domain duvar hareketlerini engellediğinden sistemdeki dielektrik ve mekanik kayıplar azalmakta böylece sistem “sert” karakter kazanmaktadır. Sonuç olarak, Mn ihtiva eden “sert” karakterli 0,2875PMN-0,2875PYbN-0,425PT piezoseramikler tekrar eden yüksek elektriksel ve mekanik gerilmelerde çalışan uygulamalarda kullanılabilecek potansiyeldedir.

Anahtar Kelimeler

• Perovskit
• Dielektrik ve Elektromekanik Özellikler
• Sert Karakter

Kaynakça

1. Akça, E., 2010. Kurşun esaslı elektroseramik tozların seramiklerin karakterizasyonları. Yüksek Lisans Tezi, Gebze Yüksek Teknoloji Enstitüsü, Kocaeli, 122. üretilmesi ve
2. Akça, E., Duran, C., 2011. Fabrication and of characterization Pb(Yb1/2Nb1/2)O3, PbTiO3) ternary system ceramics. Ceramics International ,37, 2135–2142.
3. Akça, E., Yilmaz, H., Duran, C., 2010. Processing and electrical (Pb(Mg1/3Nb2/3)O3,Pb(Yb1/2Nb1/2)O3, systems. Journal of American Ceramics Society, 93, 28–31. in lead-based PbTiO3)
4. Alkan-Gültekin, A., 2006. Kurşun esaslı yeni ferroelektrik malzemelerin üretimi ve karakterizasyonu. Yüksek Lisans Tezi, Gebze Yüksek Teknoloji Enstitüsü, Kocaeli, 80.
5. Alkan-Gultekin A., Yilmaz, H., 2009. Processing and electrical properties of (Pb(Mg1/3Nb2/3)O3)-y(Pb(Yb1/2Nb1/2)O3)]-xPbTiO3 ceramics. Materials Letters, 63, 584–586.
6. Beck, C.M., Thomas, N.W., Thompson, I., 1998. Manganese-doping of lead magnesium niobium titanate: chemical control of dielectric properties. Journal Europen Ceramics Society, 18, 1685-1693.
7. Chen, Y.H., Uchino, K., Viehland, D., 2001. Substituent effects piezoelectric ceramics. Journal of Electroceramics, 6, 13-19.
8. Chen, Y.H., Uchino, K., Viehland, D., 2001. Substituent effects on the mechanical quality factor of Pb(Mg1/3Nb2/3)O3-PbTiO3 and Pb(Sc1/2Nb1/2)O3- PbTiO3 ceramics, Journal of Applied Physics, 94, 1455- 1458.

9. Chen, Y.H., Uchino, K., Viehland, D., 2001. Substituent- introduction of “hard” olarization characteristics in “soft” Pb(BIBII)O3-PbTiO3 Journal of Applied Physics, 89, 3928-3933.
10. ferroelectric ceramics,
11. Choi, S.W., Shrout, T.R., Jang, S.J., Bhalla, A.S., 1989. Dielectric and pyroelectric properties in the Pb(Mg1/3Nb2/3)O3-PbTiO3 system”, Ferroelectrics, 100, 29-38.
12. Duran, C., Trolier-McKinstry, S., Messing, G.L., 2003. Processing and 0.5Pb(Yb1/2Nb1/2)O3-0.5PbTiO3 ceramics. Journal of Electroceramics, 10, 47–55. properties of
13. IEEE Standard on Piezoelectricity “An American National Standard” ANSI/IEEE Std 176-1987
14. Kelly, J., Leonard, M. , Tantigate, C., Safari, A., 1997. Effect of composition on the electromechanical properties ceramics. Journal of American Ceramic Society, 80, 957–964.
15. Kumar, P., Sharma, S., Thakuhr, O.P., Prakash, C., Goel, T.C., 2004. Dielectric, piezoelectric and pyroelectric properties of PMN–PT (68:32) system. Ceramics International, 30, 585 –589.
16. Lee, S.M., Lee, S.H., Yoon C.B., Kim, H.E., Lee, K.W., 2007. Low-temperature sintering of MnO2-doped PZT-PZN piezoelectric Ceramics. Journal of Electroceramics, 18, 311-315.
17. Lim, H. and Choo, W.K., 1996. Effects of MnO2 addition on the microstructure and piezoelectric properties in Pb(Yb1/2Nb1/2)O3-PbTiO3 ceramics near MPB. Proceedings of the 10th IEEE International Symposium on Applications of Ferroelectrics ISAF '96, 2, 695-698.
18. Park, J.H. , Park, J., Park, J.G., Kim, B.K., Kim, Y., 2001. Piezoelectric properties in PMN-PT relaxor ferroelectrics with MnO2 addition. Journal Europen Ceramics Society, 21, 1383-1386.
19. Shaheen, W.M., Selim, M.M., 1998. Effect of thermal treatment on physicochemical properties of pure and mixed manganese carbonate and basic copper carbonate. Thermochimica Acta, 322, 117-128.
20. Swartz, S.L., Shourt, T.R., 1982. Fabrication of perovskite lead magnesium niobate, Materials Research Bulltein, 17, 1245–1250.
21. Wongmaneerung, R., Rittidech, A., Khamman, O., Yimnirun, R., Ananta, S., 2009. processing and properties ceramics. Ceramics International, 35, 125-129.
22. Yan, Y., Cho, K.H., Priya, S., 2011. Role of Secondary Phase in high power piezoelectric PMN-PZT ceramics. Journal of American Ceramics Society, 94, 4138-4141.
23. Zhang, S., Lee, S.M., Kim, D.H., Lee, H.Y., Shrout, T.R., 2008. Pb(Mg1/3Nb2/3)O3-PbZrO3-PbTiO3, Applied Physics Letters, 93, 122908. of Mn-modified
24. Zhang, S., Xia, R., Lebrun, L., Anderson, D., Shrout, T.R., 2005. Piezoelectric materials for high power, high temperature applications. Materials Letters, 59, 3471-3475.