Abstract
Relaxor ferroelectric single crystals PMNT with the size of ϕ40 mm × 80 mm have been grown by a modified Bridgman method and their ferroelectric and piezoelectric properties have been characterized. The properties varied with the compositions and cut types. On the (001) cut, PMNT76/24 single crystals exhibited a dielectric constant ∈ of about 3 400, a dielectric loss of tanδ <0.7%, a piezoelectric constantd 33 of 980 pC/N, an electromechanical coupling factork t of 0.55 andT c of about 110°C. Whereas the properties of PMNT67/33 single crystals on (001) cut were better:∈ of about 5 300, tanδ <0.6%, d33 up to 3 000 pC/N,k t 0.64, k33 0.93 and Tc of about 150°C. The piezoelectric properties on other cuts such as (110) and (111) were much lower than those on the (001) cut. The rhombohedral PMNT crystals grown by this method showed more excellent piezoelectric properties than those grown by high temperature solution method and higher value of kt than the rhombohedral PZNT single crystals. It has also been found that the fluctuation in ferroelectric and piezoelectric properties was related to such factors as composition uniformity and poling degree.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Service, R. E., Shape-changing crystals get shiftier, Science, 1997, 275: 1878.
Bonner, W. A., Van Uitert, L. G., Growth of single crystals of Pb3MgNb2O9 by the Kyropoulos technique, Mat. Res. Bull., 1967, 2: 131.
Ye, Z. G., Tissor, P., Schmid, H., Pseudo-binary Pb(Mg1/3Nb2/3)O3-PbO phase diagram and crystal growth of Pb(Mg1/3Nb2/3)O3[PMN], Mat. Res. Bull., 1990, 25: 739.
Shrout, T. R., Chang, Z. P., Kim, N. et al., Dielectric behavior of single crystals near the (1-x)Pb(Mg1/3Nb2/3)O3-(x)PbTiO3 morphotropic phase boundary, Ferroelectric Lett., 1990, 12: 63.
Park, S. E., Shrout, T. R., Characteristics of relaxor-based piezoelectric single crystals for ultrasonic transducers, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1997, 44(5): 1140.
Park, S. E., Shrout, T. R., Ultrahigh strain and piezoelectric behavior in relaxor based ferroelectric single crystals, J. Appl. Phys., 1997, 82(4): 1804.
Jang, H. M., Oh, S. H., Moon, J. H., Thermodynamic stability and mechanisms of formation and decomposition of perovskite Pb(Zn1/3Nb2/3)O3 prepared by the PbO flux method, J. Am. Ceram. Soc., 1992, 75: 82.
Mulvihill, M. L., Park, S. E., Risch, G. et al., The role of processing variables in the flux growth of lead zinc niobate-lead titanate relaxor ferroelectric single crystals, Jpn. J. Appl. Phys., 1996, 35(7): 3981.
Matsuo, Y., Sasaki, H., Hayakawa, S. et al., High-pressure synthesis of perovskite-type Pb(Zn1/3Nb2/3)C> 3, J. Am. Ceram. Soc, 1969, 52:516.
Kuwata, J., Uchino, W., Nomura, S., Phase transitions in the Pb(Zn1/3Nb2/3)O3-PbTiO3 system, Ferroelectrics, 1981, 37: 579.
Kobayashi, T., Shimanuki, S., Saitoh, S. et al., Improved growth of large lead zinc titanate piezoelectric single crystals for medical ultrasonic transducers, Jpn. J. Appl. Phys., 1997, 36(9B): 6035.
Shimanuki, S., Saito, S., Yamashita, Y., Single crystal of the Pb(Zn1/3Nb2/3)O3-PbTiO3 system grown by the vertical Bridgman method and its characterization, Jpn. J. Appl. Phys., 1998, 37(6A): 3382.
Park, S. E., Mulvihill, M. L., Risch, G. et al., The effect of growth conditions on the dielectric properties of Pb(Zn1/3Nb2/3)C3 single crystals, Jpn. J. Appl. Phys., 1997, 36(3A): 1154.
Author information
Authors and Affiliations
About this article
Cite this article
Xu, G., Luo, H., Wang, P. et al. Ferroelectric and piezoelectric properties of novel relaxor ferroelectric single crystals PMNT. Chin.Sci.Bull. 45, 491–495 (2000). https://doi.org/10.1007/BF02887091
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02887091