Effects of sintering atmosphere (N₂ and O₂) on dielectric properties and electrical conductivity of Na(Nb_1−xTa_x)O₃ ceramics

References

• J. Koruza et al., Grain-size-induced ferroelectricity in NaNbO3, Acta Mater. 126, 77 (2017). DOI: 10.1016/j.actamat.2016.12.049.
   Web of Science ®Google Scholar
• A. Kania and J. Kwapulinski, Ag1-xNaxNbO3 (ANN) solid solutions: from disordered antiferroelectric AgNbO3 to normal antiferroelectric NaNbO3, J. Phys. Condens. Matter. 11 (45), 8933 (1999). DOI: 10.1088/0953-8984/11/45/316.
   Google Scholar
• A. C. Sakowski, K. Lukaszewicz, and H. D. Megaw, Structure of sodium niobate at room temperature and problem of reliability in pseudosymmetric structures, Acta Crystallogr. B Struct. Sci. 25, 851 (1969). DOI: 10.1107/S0567740869003141.
   Google Scholar
• A. M. Glazer and H. D. Megaw, The structure of sodium niobate (T2) at 600 °C, and the cubic-tetragonal transition in relation to soft-phonon modes, Philos. Mag. 25 (5), 1119 (1972). DOI: 10.1080/14786437208226856.
   Web of Science ®Google Scholar
• C. N. W. Darlington and H. D. Megaw, The low-temperature phase-transition of sodium niobate and the structure of low-temperature phase, Acta Crystallogr. B Struct. Sci. 29 (10), 2171 (1973). DOI: 10.1107/S0567740873006308.
   Google Scholar
• A. M. Glazer and H. D. Megaw, Studies of lattice-parameters and domains in phase-transitions of NaNbO3, Acta Cryst. A. 29 (5), 489 (1973). DOI: 10.1107/S0567739473001245.
   Google Scholar
• L. E. Cross and B. J. Nicholson, The optical and electrical properties of single crystals of sodium niobate, Philos. Mag. 46 (376), 453 (1955). DOI: 10.1080/14786440508520582.
   Web of Science ®Google Scholar
• V. Bobnar, J. Bernard, and M. Kosec, Relaxorlike dielectric properties and history-dependent effects in the lead-free K0.5Na0.5NbO3-SrTiO3 ceramic system, Appl. Phys. Lett. 85 (6), 994 (2004). DOI: 10.1063/1.1779947.
   Web of Science ®Google Scholar
• D. Lin et al., Structure and electrical properties of K0.5Na0.5NbO3-LiSbO3 lead-free piezoelectric ceramics, J. Appl. Phys. 101 (7), 074111 (2007). DOI: 10.1063/1.2715486.
   Web of Science ®Google Scholar
• D. M. Lin et al., Structure, piezoelectric and ferroelectric properties of Li- and Sb-modified K0.5Na0.5NbO3 lead-free ceramics, J. Phys. D: Appl. Phys. 40 (11), 3500 (2007). DOI: 10.1088/0022-3727/40/11/036.
   Web of Science ®Google Scholar
• A. Dahiya, O. P. Thakur, and J. K. Juneja, Sensing and actuating applications of potassium sodium niobate: use of potassium sodium niobate in sensor and actuator, presented at the 7th International Conference on Sensing Technology (ICST), Wellington, New Zealand, 3–5 Dec. 2013.
   Google Scholar
• K. Reichmann et al., Load characteristics of lead-free ceramic multilayer actuators based on bismuth-sodium-titanate, Int. J. Appl. Ceram. Technol. 11 (3), 431 (2014). DOI: 10.1111/ijac.12220.
   Web of Science ®Google Scholar
• H. T. Wang et al., Enhanced energy storage density and discharge efficiency in the strontium sodium niobate-based glass-ceramics, J. Alloys Compd. 687, 280 (2016). DOI: 10.1016/j.jallcom.2016.06.024.
   Web of Science ®Google Scholar
• I. P. Raevski et al., NaNbO3-based relaxor, Ferroelectrics. 299 (1), 95 (2004). DOI: 10.1080/00150190490429231.
   Web of Science ®Google Scholar
• H. Iwasaki and T. Ikeda, Studies on system Na(Nb1-xTax)O3, J. Phys. Soc. Jpn. 18 (2), 157 (1963). DOI: 10.1143/JPSJ.18.157.
   Google Scholar
• I. P. Raevski and S. A. Prosandeev, A new, lead free, family of perovskites with a diffuse phase transition: NaNbO3-based solid solutions, J. Phys. Chem. Solids. 63 (10), 1939 (2002). DOI: 10.1016/S0022-3697(02)00181-6.
   Web of Science ®Google Scholar
• V. Efremov et al., Dielectric and elastic parameters of LixNa1-xTa0.1Nb0.9O3 ferroelectric solid solution ceramics, Integr. Ferroelectr. 123 (1), 113 (2011). DOI: 10.1080/10584587.2011.570661.
   Web of Science ®Google Scholar
• D. Lin, K. W. Kwok, and H. L. W. Chan, Microstructure, phase transition, and electrical properties of (K0.5Na0.5)(1-x)Lix(Nb1-yTay)O3 lead-free piezoelectric ceramics, J. Appl. Phys. 102 (3), 034102 (2007). DOI: 10.1063/1.2761852.
   Google Scholar
• M. Matsubara et al., Processing and piezoelectric properties of lead-free (K,Na) (Nb,Ta)O3 ceramics, J. Am. Ceram. Soc. 88 (5), 1190 (2005). DOI: 10.1111/j.1551-2916.2005.00229.x.
   Web of Science ®Google Scholar
• K. Kobayashi et al., Novel high-temperature antiferroelectric-based dielectric NaNbO3-NaTaO3 solid solutions processed in low oxygen partial pressures, J. Am. Ceram. Soc. 96 (2), 531 (2013).
   Web of Science ®Google Scholar
• X. M. Chen et al., Dielectric and ferroelectric characterization of Na(Ta,Nb)O3 solid solution ceramics, J. Electroceram. 15 (1), 21 (2005). DOI: 10.1007/s10832-005-0373-9.
   Web of Science ®Google Scholar
• A. Torres-Pardo et al., Phase coexistence in NaNb(1-x)TaxO3 materials with enhanced dielectric properties, J. Mater. Chem. 22 (30), 14938 (2012). DOI: 10.1039/c2jm32078a.
   Google Scholar
• H. Z. Guo, H. Shimizu, and C. A. Randall, Direct evidence of an incommensurate phase in NaNbO3 and its implication in NaNbO3-based lead-free antiferroelectrics, Appl. Phys. Lett. 107 (11), 112904 (2015). DOI: 10.1063/1.4930067.
   Web of Science ®Google Scholar
• H. S. Shulman, D. Damjanovic, and N. Setter, Niobium doping and dielectric anomalies in bismuth titanate, J. Am. Ceram. Soc. 83 (3), 528 (2004). DOI: 10.1111/j.1151-2916.2000.tb01229.x.
   Google Scholar