Phase transition, dielectric relaxation and piezoelectric properties of bismuth doped La2Ti2O7 ceramics

Damjanovic, 1998, Materials for high temperature piezoelectric transducers, Curr. Opin. Solid State Mater. Sci., 3, 469, 10.1016/S1359-0286(98)80009-0 Turner, 1994, Materials for high temperature acoustic and vibration sensors: a review, Appli. Acoustics, 41, 299, 10.1016/0003-682X(94)90091-4 Zhang, 2005, Piezoelectric materials for high power, high temperature applications, Mater. Lett., 59, 3471, 10.1016/j.matlet.2005.06.016 Yan, 2005, A lead-free high-Curie-point ferroelectric ceramic, CaBi2Nb2O9, Adv. Mater., 17, 1261, 10.1002/adma.200401860 Jaffe, 1971, vol. 3 Li, 2015, Piezoelectric activity in perovskite ferroelectric crystals, IEEE Trans. Ultrason. Ferroelectr. Freq. Contr., 62, 18, 10.1109/TUFFC.2014.006660 Shulman, 1996, Microstructure, electrical conductivity, and piezoelectric properties of bismuth titanate, J. Am. Ceram. Soc., 79, 3124, 10.1111/j.1151-2916.1996.tb08086.x Nanamatsu, 1974, A new ferroelectric: La2Ti2O7, Ferroelectrics, 8, 511, 10.1080/00150197408234143 Yan, 2009, Piezoelectric ceramics with super-high Curie points, J. Am. Ceram. Soc., 92, 2270, 10.1111/j.1551-2916.2009.03209.x Fuierer, 1991, La2Ti2O7 ceramics, J. Am. Ceram. Soc., 74, 2876, 10.1111/j.1151-2916.1991.tb06857.x Nanamatsu, 1975, Crystallographic and dielectric properties of ferroelectric A2B2O7 (A=Sr, B=Ta, Nb) crystals and their solid solutions, J. Phys. Soc. Jpn., 38, 817, 10.1143/JPSJ.38.817 Ning, 2010, Piezoelectric strontium niobate and calcium niobate ceramics with super-high Curie points, J. Am. Ceram. Soc., 93, 1409 Selbach, 2008, The ferroic phase transitions of BiFeO3, Adv. Mater., 20, 3692, 10.1002/adma.200800218 Shao, 2012, Investigation of microstructure in ferroelectric lead-free La2Ti2O7 thin film grown on (001)-SrTiO3 substrate, CrystEngComm, 14, 6524, 10.1039/c2ce26078f Shao, 2011, Microstructure and nanoscale piezoelectric/ferroelectric properties in La2Ti2O7 thin films grown on (110)-oriented doped Nb:SrTiO3 substrates, Adv. Eng. Mater., 13, 961, 10.1002/adem.201100105 Kim, 2002, Microstructure and electrical properties of Ln2Ti2O7 (Ln=La, Nd), Thin Solid Films, 420–421, 575 Yamamoto, 1991, Piezoelectric properties of layered perovskite A2Ti2O7 (A=La and Nd) single-crystal fibers, J. Appl. Phys., 70, 4469, 10.1063/1.349078 Gao, 2013, Piezoelectric and dielectric properties of Ce substituted La2Ti2O7 ceramics, J. Eur. Ceram. Soc., 33, 1001, 10.1016/j.jeurceramsoc.2012.11.015 Orgel, 1959, The stereochemistry of B subgroup metals. Part II the inert pair, J. Chem. Soc., 3815 Laarif, 1986, The lone pair concept and the conductivity of bismuth oxides Bi2O3, Solid State Ionics, 21, 183, 10.1016/0167-2738(86)90071-8 Zylberberg, 2006, Improved dielectric properties of bismuth-doped LaAlO3, J. Appl. Phys., 100, 086102, 10.1063/1.2358827 Santos, 2009, Microstructural, structural and electrical properties of La3+-modified Bi4Ti3O12 ferroelectric ceramics, J. Eur. Ceram. Soc., 29, 751, 10.1016/j.jeurceramsoc.2008.06.025 Catalan, 2009, Physics and applications of bismuth ferrite, Adv. Mater., 21, 2463, 10.1002/adma.200802849 Ishimwa, 1982, Compounds with perovskite-type slabs. V. A high-temperature modification of La2Ti2O7, Acta Cryst., B38, 368, 10.1107/S0567740882002994 Irvine, 1990, Electroceramics: characterization by impedance spectroscopy, Adv. Mater., 2, 132, 10.1002/adma.19900020304 Macdonald, 1992, Impedance spectroscopy, Ann. Biomed. Eng., 20, 289, 10.1007/BF02368532 Li, 2012, Complex impedance analysis on a layered perovskite-like ceramic: La3Ti2TaO11, J. Mater. Sci., 47, 4200, 10.1007/s10853-011-6185-1 West, 1997, Characterization of electrical materials, especially ferroelectrics, by impedance spectroscopy, J. Electroceram., 1, 65, 10.1023/A:1009950415758 Lotgering, 1959, Topotactical reactions with ferromagnetic oxides having hexagonal crystal structures I, J. Inorg. Nucl. Chem., 9, 113, 10.1016/0022-1902(59)80070-1 Hou, 2003, Dielectric properties of Bi4−xLaxTi3O12 (0≤x≤2) ceramics, J. Electroceram., 10, 203, 10.1023/B:JECR.0000011218.75520.d3 Catalan, 2006, Magnetocapacitance without magnetoelectric coupling, Appl. Phys. Lett., 88, 102902, 10.1063/1.2177543 Wang, 2012, Origin of high-temperature relaxor-like behavior in CaCu3Ti4O12, J. Appl. Phys., 112, 034109, 10.1063/1.4745014 Shao, 2010, Structural and dielectric/ferroelectric properties of (La1−xNdx)2Ti2O7 synthesized by sol–gel route, J. Solid State Chem., 183, 1652, 10.1016/j.jssc.2010.05.004 Wang, 2013, oxygen-vacancy-related dielectric relaxations in SrTiO3 at high temperatures, J. Appl. Phys., 113, 094103, 10.1063/1.4794349 Wang, 2007, Polaron relaxation related to localized charge carriers in Pr1−xCaxMnO3, New J. Phys., 9, 210, 10.1088/1367-2630/9/7/210