[1] JIN L, TANG X, SONG D et al. Annealing temperature effects on (111)-oriented BiFeO₃ thin films deposited on Pt/Ti/SiO₂/Si by chemical solution deposition[J]. Journal of Materials Chemistry C, 10742(2015).

[2] XIAO M, LI S, LEI Z, Study of. 111)-oriented PZT thin films prepared by a modified Sol-Gel method[J]. Journal of Materials Science: Materials in Electronics, 4031(2015).

[3] LI Z, ZHAO Y, LI W L et al. Photovoltaic effect induced by self- polarization in BiFeO₃ films[J]. The Journal of Physical Chemistry C, 9411(2021).

[4] ZHANG Y, ZHENG H, WANG X et al. Enhanced photovoltaic properties of gradient calcium-doped BiFeO₃ films[J]. Ceramics International, 10083(2020).

[5] LI Y, CUI X, TIAN M et al. Stable photovoltaic output and optically tunable resistive switching in all-inorganic flexible ferroelectric thin film with self-polarization characteristic[J]. Acta Materialia, 117173(2021).

[6] HOU Y, HAN R, LIU Y et al. Enhanced piezoelectric properties in Li_xBi_1-xNb_xFe_1-xO₃ films contributed by low-symmetry phase and self-polarization[J]. Ceramics International, 3723(2019).

[7] LIU Y, DING L, DAI L et al. All-ceramic flexible piezoelectric energy harvester[J]. Advanced Functional Materials, 2209297(2022).

[8] ZOU D, LIU S, ZHANG C et al. Flexible and translucent PZT films enhanced by the compositionally graded heterostructure for human body monitoring[J]. Nano Energy, 85: 105984(2021).

[9] CHEN X, ZOU Y, YUAN G et al. Temperature gradient introduced ferroelectric self-poling in BiFeO₃ ceramics[J]. Journal of the American Ceramic Society, 3788(2013).

[10] LICHTENSTEIGER C, WEYMANN C, FERNANDEZ-PENA S et al. Built-in voltage in thin ferroelectric PbTiO₃ films: the effect of electrostatic boundary conditions[J]. New Journal of Physics, 043030(2016).

[11] FONG D, KOLPAK A, EASTMAN J et al. Stabilization of monodomain polarization in ultrathin PbTiO₃ films[J]. Physical Review Letters, 127601(2006).

[12] PANTEL D, GOETZE S, HESSE D et al. Room-temperature ferroelectric resistive switching in ultrathin Pb(Zr_0.2Ti_0.8)O₃ films[J]. ACS Nano, 6032(2011).

[13] GUO R, SHEN L, WANG H et al. Tailoring self-polarization of BaTiO₃ thin films by interface engineering and flexoelectric effect[J]. Advanced Materials Interfaces, 1600737(2016).

[14] HOU Y F, ZHANG T D, LI W L et al. Self-polarization induced by lattice mismatch and defect dipole alignment in (001) BaTiO₃/LaNiO₃ polycrystalline film prepared by magnetron sputtering at low temperature[J]. RSC Advances, 61821(2015).

[15] ZHAO J, REN W, NIU G et al. Recoverable self-polarization in lead-free bismuth sodium titanate piezoelectric thin films[J]. ACS Applied Materials & Interfaces, 28716(2017).

[16] ZHAO J, NIU G, REN W et al. Self-polarization in epitaxial fully matched lead-free bismuth sodium titanate based ferroelectric thin films[J]. ACS Applied Materials & Interfaces, 23945(2018).

[17] ZHAO J, NIU G, REN W et al. Polarization behavior of` lead-free 0.94(Bi_0.5Na_0.5)TiO₃-0.06BaTiO₃ thin films with enhanced ferroelectric properties[J]. Journal of the European Ceramic Society, 3928(2020).

[18] JEON B C, LEE D, LEE M H et al. Flexoelectric effect in the reversal of self-polarization and associated changes in the electronic functional properties of BiFeO₃ thin films[J]. Advanced Materials, 5643(2013).

[19] HOU Y, LI W, ZHANG T et al. Large piezoelectric response induced by the coexistence of low-symmetry and self-polarization in Li⁺-Nb⁵⁺-doped BiFeO₃ polycrystalline films[J]. The Journal of Physical Chemistry C, 6246(2016).

[20] CHISHOLM M F, LUO W, OXLEY M P et al. Atomic-scale compensation phenomena at polar interfaces[J]. Physical Review Letters, 197602(2010).

[21] LIU C, LIU Y, ZHANG B et al. Ferroelectric self-polarization controlled magnetic stratification and magnetic coupling in ultrathin La_0.67Sr_0.33MnO₃ films[J]. ACS Applied Materials & Interfaces, 30137(2021).

[22] CHU Y H, CRUZ M P, YANG C H et al. Domain control in multiferroic bifeo₃ through substrate vicinality[J]. Advanced Materials, 2662(2007).

[23] BAEK S H, JANG H W, FOLKMAN C M et al[J], 309(2010).

[24] CHEN J, LUO Y, OU X et al. Upward ferroelectric self-polarization induced by compressive epitaxial strain in (001) BaTiO₃ films[J]. Journal of Applied Physics, 204105(2013).

[25] WU J, FAN Z, XIAO D et al. Multiferroic bismuth ferrite-based materials for multifunctional applications: ceramic bulks, thin films and nanostructures[J]. Progress in Materials Science, 84: 335(2016).

[26] LI X, ZHANG L, LUO N et al. Enhanced H₂S sensing performance of BiFeO₃ based MEMS gas sensor with corona poling[J]. Sensors and Actuators B: Chemical, 131477(2022).

[27] CAMPANINI M, ERNI R, YANG C et al. Periodic giant polarization gradients in doped BiFeO₃ thin films[J]. Nano Letters, 717(2018).

[28] CHAUHAN S, KUMAR M, CHHOKER S et al. Substitution driven structural and magnetic transformation in Ca-doped BiFeO₃ nanoparticles[J]. RSC Advances, 43080(2016).

[29] JIN L, TANG X, WEI R et al. BiFeO₃(00l)/LaNiO₃/Si thin films with enhanced polarization: an all-solution approach[J]. RSC Advances, 78629(2016).

[30] KHOMYAKOVA E, SADL M, URSIC H et al. Self-poling of BiFeO₃ thick films[J]. ACS Applied Materials & Interfaces, 19626(2016).