[1] YAO Z H, XU C B, LIU H X et al. Greatly reduced leakage current and defect mechanism in atmosphere sintered BiFeO₃- BaTiO₃ high temperature piezoceramics[J]. J. Mater. Sci-Mater. El., 4975(2014).

[2] LEONTSEV S O, EITEL R E. Dielectric and piezoelectric properties in Mn-modified (1-x)BiFeO₃-xBaTiO₃ ceramics[J]. J. Am. Ceram. Soc., 2957(2009).

[3] WAN Y, LI Y, LI Q et al. Microstructure, ferroelectric, piezoelectric, and ferromagnetic properties of Sc-modified BiFeO₃- BaTiO₃ multiferroic ceramics with MnO₂ addition[J]. J. Am. Ceram. Soc., 1809(2014).

[4] LEE M H, KIM D J, PARK J S et al. High-performance lead- free piezoceramics with high curie temperatures[J]. Adv. Mater., 6976(2015).

[5] ICHIRO FUJII S W. Structural and electrical characteristics of potential candidate lead-free BiFeO₃-BaTiO₃piezoelectric ceramics[J]. J. Appl. Phys.(2017).

[6] ZHANG S, YU F. Piezoelectric materials for high temperature sensors[J]. J. Am. Ceram. Soc., 3153(2011).

[7] SHI Y, DONG X, ZHAO K et al. Potential high-temperature piezoelectric ceramics with remarkable performances enhanced by the second-order Jahn-Teller effect[J]. ACS Appl. Mater. & Interf., 14385(2021).

[8] KE Q, LOU X, WANG Y et al. Oxygen-vacancy-related relaxation and scaling behaviors of Bi_0.9La_0.1Fe_0.98Mg_0.02O₃ferroelectric thin films[J]. Phys. Rev. B, 024102(2010).

[9] VERWEIJ H. Thermodynamics and transport of ionic and electric defects in crystalline oxides[J]. J. Am. Ceram. Soc., 2175(1997).

[10] ZHENG T, WU J, XIAO D et al. Recent development in lead-free perovskite piezoelectric bulk materials[J]. Prog. in Mater. Sci.(2018).

[11] WANG T, JIN L, TIAN Y et al. Microstructure and ferroelectric properties of Nb₂O₅-modified BiFeO₃-BaTiO₃ lead-free ceramics for energy storage[J]. Mater. Lett.(2014).

[12] QI X D, DHO J, TOMOV R et al. Greatly reduced leakage current and conduction mechanism in aliovalent-ion-doped BiFeO₃[J]. Appl. Phys. Lett., 062903(2005).

[13] WEFRING E T, EINARSRUD M A, GRANDE T. Electrical conductivity and thermopower of (1-x)BiFeO_3-xBi_0.5K_0.5TiO₃(x = 0.1, 0.2) ceramics near the ferroelectric to paraelectric phase transition[J]. Phys. Chem. Chem. Phys.: PCCP, 9420(2015).

[14] ZHU L F, SONG A, ZHANG B P et al. Boosting energy storage performance of BiFeO₃-based multilayer capacitors via enhancing ionic bonding and relaxor behavior[J]. J. Mater. Chem. A, 7382(2022).

[15] ZENG F, FAN G, HAO M et al. Conductive property of BiFeO₃- BaTiO₃ ferroelectric ceramics with high Curie temperature[J]. J. Alloys and Compd.(2020).

[16] VALANT M. Peculiarities of a solid-state synthesis of multiferroic polycrystalline BiFeO₃[J]. Chem. Mater., 5431(2007).

[17] SOSNOWSKA I, NEUMAIER T P, STEICHELE E. Spiral magnetic ordering in bismuth ferrite[J]. J. Phys. C: Solid State Phys., 4835(1982).

[18] PALAI R, KATIYAR R S, SCHMID H. β phase and γ-β metal-insulator transition in multiferroic BiFeO₃[J]. Phys. Rev. B, 014110(2008).

[19] GHEORGHIU F P, IANCULESCU A, POSTOLACHE P et al. Preparation and properties of (1-x)BiFeO₃-xBaTiO₃multiferroic ceramics[J]. J.. Alloys and Compd., 862(2010).

[20] WANG G, LI J, ZHANG X et al. Ultrahigh energy storage density lead-free multilayers by controlled electrical homogeneity[J]. Energ. Environ. Sci., 582(2019).

[21] MORRISON F D, SINCLAIR D C, WEST A R. Characterization of lanthanum-doped barium titanate ceramics using impedance spectroscopy[J]. J. Am. Ceram. Soc., 531(2001).

[22] SUNDARAKANNAN B, KAKIMOTO K, OHSATO H. Frequency and temperature dependent dielectric and conductivity behavior of KNbO₃ ceramics[J]. J. Appl. Phys., 5182(2003).

[23] IRVINE J T S. Electroceramics characterization by impedance spectroscopy[J]. Adv. Mater., 132(1990).

[24] JEBARI H, TAHIRI N, BOUJNAH M et al. Structural, optical, dielectric, and magnetic properties of iron-sillenite Bi₂₅FeO₄₀[J]. Appl. Phys. A, 842(2022).

[25] JIANG T, WANG Y, GUO Z et al. Bi₂₅FeO₄₀/Bi₂O₂CO₃ piezoelectric catalyst with built-in electric fields that was prepared via photochemical self-etching of Bi₂₅FeO₄₀for 4-chlorophenol degradation[J]. J. Cleaner Prod.(2022).

[26] SEI K K, MASARU M, HIROAKI Y. Electrical anisotropy and plausible explanation for dielectric anomaly of Bi₄Ti₃O₁₂ single crystal[J]. Mater. Res. Bull., 121(1996).

[27] AUCIELLO O, KRAUSS A R, IM J et al. Studies of film growth processes and surface structural characterization of ferroelectric memory-compatible SrBi₂Ta₂O₉ layered perovskites via in situ, real-time ion-beam analysis[J]. Appl. Phys. Lett., 2671(1996).

[28] WASER R. Grain boundaries in dielectric and mixed-conducting ceramics[J]. Acta Mater., 797(2000).

[29] YOON S H, RANDALL C A, HUR K H. Influence of grain size on impedance spectra and resistance degradation behavior in acceptor (Mg)-doped BaTiO₃ ceramics[J]. J. Am. Ceram. Soc., 2944(2009).

[30] REISS G, VANCEA J, HOFFMANN H. Grain-boundary resistance in polycrystalline metals[J]. Phys. Rev. Lett., 2100(1986).

[31] HAILE S M, WEST D L, CAMPBELL J. The role of microstructure and processing on the proton conducting properties of gadolinium- doped barium cerate[J]. J. Mater. Res., 1576(1998).

[32] LUO T. Maxwell-Wagner Polarization Characteristics in BaTiO₃ PVDF Nanocomposites[J]. High Voltage Engineering(2019).

[33] ZHANG C, CHEN Y, LI X et al. Effect of LiF addition on sintering behavior and dielectric breakdown mechanism of MgO-based microwave dielectric ceramics[J]. J. Materiomics, 478(2021).

[34] ABRANTES J C C. Applicability of the brick layer model to describe the grain boundary properties of strontium titanate ceramics[J]. J. Eur. Ceram. Soc., 1603(2000).

[35] BENNETT N S, BYRNE D, COWLEY A. Enhanced Seebeck coefficient in silicon nanowires containing dislocations[J]. Appl. Phys. Lett., 013903(2015).

[36] SINGH H, KUMAR A, YADAV K L. Structural, dielectric, magnetic, magnetodielectric and impedance spectroscopic studies of multiferroic BiFeO₃-BaTiO₃ceramics[J]. Mater. Sci. and Engin.: B, 540(2011).

[37] LI Q, WEI J, TU T et al. Remarkable piezoelectricity and stable high-temperature dielectric properties of quenched BiFeO₃-BaTiO₃ceramics[J]. J. Am. Ceram. Soc., 5573(2017).

[38] WANG L, LIANG R, ZHOU Z et al. Electrical conduction mechanisms and effect of atmosphere annealing on the electrical properties of BiFeO₃-BaTiO₃ ceramics[J]. J. Eur. Ceram. Soc., 4727(2019).

[39] MURAKAMI S, AHMED N T A F, WANG D et al. Optimising dopants and properties in BiMeO₃ (Me = Al, Ga, Sc, Y, Mg_2/3Nb_1/3, Zn_2/3Nb_1/3, Zn_1/2Ti_1/2) lead-free BaTiO₃-BiFeO₃ based ceramics for actuator applications[J]. J. Eur. Ceram. Soc., 4220(2018).

[40] MURAKAMI S, WANG D, MOSTAED A et al. High strain (0.4%) Bi(Mg_2/3Nb_1/3)O₃-BaTiO₃-BiFeO₃ lead-free piezoelectric ceramics and multilayers[J]. J. Am. Ceram. Soc., 5428(2018).