References(40)
[1]
NA Benedek, CJ Fennie. Hybrid improper ferroelectricity: A mechanism for controllable polarization-magnetization coupling. Phys Rev Lett 2011, 106: 107204.
[2]
E Bousquet, M Dawber, N Stucki, et al. Improper ferroelectricity in perovskite oxide artificial superlattices. Nature 2008, 452: 732-736.
[3]
YS Oh, X Luo, FT Huang, et al. Experimental demonstration of hybrid improper ferroelectricity and the presence of abundant charged walls in (Ca,Sr)3Ti2O7 crystals. Nat Mater 2015, 14: 407-413.
[4]
AM Glazer. The classification of tilted octahedra in perovskites. Acta Crystallogr B 1972, 28: 3384-3392.
[5]
XQ Liu, JW Wu, XX Shi, et al. Hybrid improper ferroelectricity in Ruddlesden-Popper Ca3(Ti,Mn)2O7 ceramics. Appl Phys Lett 2015, 106: 202903.
[6]
SN Ruddlesden, P Popper. The compound Sr3Ti2O7 and its structure. Acta Cryst 1958, 11: 54-55.
[7]
AT Mulder, NA Benedek, JM Rondinelli, et al. Turning ABO3 antiferroelectrics into ferroelectrics: Design rules for practical rotation-driven ferroelectricity in double perovskites and A3B2O7 Ruddlesden-Popper compounds. Adv Funct Mater 2013, 23: 4810-4820.
[8]
JM Rondinelli, CJ Fennie. Octahedral rotation-induced ferroelectricity in cation ordered perovskites. Adv Mater 2012, 24: 1961-1968.
[9]
HJ Zhao, J Íñiguez, W Ren, et al. Atomistic theory of hybrid improper ferroelectricity in perovskites. Phys Rev B 2014, 89: 174101.
[10]
YS Oh, X Luo, FT Huang, et al. Experimental demonstration of hybrid improper ferroelectricity and the presence of abundant charged walls in (Ca,Sr)3Ti2O7 crystals. Nat Mater 2015, 14: 407-413.
[11]
EA Nowadnick, CJ Fennie. Domains and ferroelectric switching pathways in Ca3Ti2O7 from first principles. Phys Rev B 2016, 94: 104105.
[12]
MS Senn, A Bombardi, CA Murray, et al. Negative thermal expansion in hybrid improper ferroelectric Ruddlesden-Popper perovskites by symmetry trapping. Phys Rev Lett 2015, 114: 035701.
[13]
JG Cherian, T Birol, NC Harms, et al. Optical spectroscopy and band gap analysis of hybrid improper ferroelectric Ca3Ti2O7. Appl Phys Lett 2016, 108: 262901.
[14]
X Li, L Yang, CF Li, et al. Ultra-low coercive field of improper ferroelectric Ca3Ti2O7 epitaxial thin films. Appl Phys Lett 2017, 110: 042901.
[15]
Y Okazaki, T Mishima, S Nishimoto, et al. Photocatalytic activity of Ca3Ti2O7 layered-perovskite doped with Rh under visible light irradiation. Mater Lett 2008, 62: 3337-3340.
[16]
RP Cao, G Chen, XG Yu, et al. Luminescence properties of Ca3Ti2O7:Eu3+, Bi3+, R+ ( R+ = Li+, Na+, and K+) red emission phosphor. J Solid State Chem 2014, 220: 97-101.
[17]
CF Li, SH Zheng, HW Wang, et al. Structural transitions in hybrid improper ferroelectric Ca3Ti2O7 tuned by site-selective isovalent substitutions: A first-principles study. Phys Rev B 2018, 97: 184105.
[18]
C Huang, W Wong-Ng, WF Liu, et al. Major improvement of ferroelectric and optical properties in Na-doped Ruddlesden-Popper layered hybrid improper ferroelectric compound, Ca3Ti2O7. J Alloys Compd 2019, 770: 582-588.
[19]
XQ Liu, BH Chen, JJ Lu, et al. Hybrid improper ferroelectricity in B-site substituted Ca3Ti2O7: The role of tolerance factor. Appl Phys Lett 2018, 113: 242904.
[20]
YF Gong, P Wu, X Hai, et al. Enhanced dielectric and magnetic properties in Ru-substituted Bi0.9La0.1FeO3 ceramics. J Phys D: Appl Phys 2012, 45: 355001.
[21]
XL Xu, WF Liu, H Zhang, et al. The abnormal electrical and optical properties in Na and Ni codoped BiFeO3 nanoparticles. J Appl Phys 2015, 117: 174106.
[22]
GJ Li, XQ Liu, JJ Lu, et al. Crystal structural evolution and hybrid improper ferroelectricity in Ruddlesden-Popper Ca3-xSrxTi2O7 ceramics. J Appl Phys 2018, 123: 014101.
[23]
F Yan, M-O Lai, L Lu, et al. Enhanced multiferroic properties and valence effect of Ru-doped BiFeO3 thin films. J Phys Chem C 2010, 114: 6994-6998.
[24]
K Yu, L Jin, Y Li, et al. Structure and conductivity of perovskite Li0.355La0.35Sr0.3Ti0.995M0.005O3 (M = Al, Co and In) ceramics. Ceram Int 2019, 45: 23941-23947.
[25]
ZZ Hu, JJ Lu, BH Chen, et al. First-order phase transition and unexpected rigid rotation mode in hybrid improper ferroelectric (La, Al) co-substituted Ca3Ti2O7 ceramics. J Materiomics 2019, 5: 618-625.
[26]
L Jin, F Li, SJ Zhang. Decoding the fingerprint of ferroelectric loops: Comprehension of the material properties and structures. J Am Ceram Soc 2014, 97: 1-27.
[27]
HX Yan, F Inam, G Viola, et al. The contribution of electrical conductivity, dielectric permittivity and domain switching in ferroelectric hysteresis loops. J Adv Dielect 2011, 1: 107-118.
[28]
JY Li, RC Rogan, E Üstündag, et al. Domain switching in polycrystalline ferroelectric ceramics. Nat Mater 2005, 4: 776-781.
[29]
BH Zhang, ZZ Hu, BH Chen, et al. Improved hybrid improper ferroelectricity in B-site substituted Ca3Ti2O7 ceramics with a Ruddlesden-Popper structure. J Appl Phys 2020, 128: 054102.
[30]
QW Zhang, W Cai, QT Li, et al. Enhanced piezoelectric response of (Ba,Ca)(Ti, Zr)O3 ceramics by super large grain size and construction of phase boundary. J Alloys Compd 2019, 794: 542-552.
[31]
YL Han, WF Liu, P Wu, et al. Effect of aliovalent Pd substitution on multiferroic properties in BiFeO3 nanoparticles. J Alloys Compd 2016, 661: 115-121.
[32]
XN Zhang, WF Liu, YL Han, et al. Novel optical and magnetic properties of Li-doped quasi-2D manganate Ca3Mn2O7 particles. J Mater Chem C 2017, 5: 7011-7019.
[33]
J-C Dupin, D Gonbeau, P Vinatier, et al. Systematic XPS studies of metal oxides, hydroxides and peroxides. Phys Chem Chem Phys 2000, 2: 1319-1324.
[34]
SM Mukhopadhyay, TS Chen. Interaction of PbZrxTi1-xO3 (PZT) with Ni: Role of surface defects. J Phys D: Appl Phys 1995, 28: 2170-2175.
[35]
RC Miller, G Weinreich. Mechanism for the sidewise motion of 180° domain walls in barium titanate. Phys Rev 1960, 117: 1460-1466.
[36]
LL Noto, SS Pitale, JJ Terblans, et al. Surface chemical changes of CaTiO3:Pr3+ upon electron beam irradiation. Phys B: Condens Matter 2012, 407: 1517-1520.
[37]
A Naldoni, M Allieta, S Santangelo, et al. Effect of nature and location of defects on bandgap narrowing in black TiO2 nanoparticles. J Am Chem Soc 2012, 134: 7600-7603.
[38]
YL Han, WF Liu, XL Xu, et al. The abnormal optical property and room-temperature exchange bias behavior in Na- and Ru-codoped BiFeO3 nanoparticles. J Am Ceram Soc 2016, 99: 3616-3622.
[39]
CL Lu, X Chen, S Dong, et al. Ru-doping-induced ferromagnetism in charge-ordered La0.4Ca0.6MnO3. Phys Rev B 2009, 79: 245105.
[40]
Y Tokunaga, N Furukawa, H Sakai, et al. Composite domain walls in a multiferroic perovskite ferrite. Nat Mater 2009, 8: 558-562.