[1] EERENSTEIN W, MATHUR N D, SCOTT J F. Multiferroic and magnetoelectric materials[J]. Nature, 442, 759-765(2006).

[2] FIEBIG M, LOTTERMOSER T, MEIER D et al. The evolution of multiferroics[J]. Nature Reviews Materials, 1, 16046(2016).

[3] WEI Y X, JIN C Q, ZENG Y M. Progress of relaxor multiferroic materials[J]. Journal of Inorganic Materials, 32, 1009-1017(2017).

[4] SCOTT J F. Multiferroic memories[J]. Nature Materials, 6, 256-257(2007).

[5] BIBES M, BARTHÉLÉMY A. Towards a magnetoelectric memory[J]. Nature Materials, 7, 425-426(2008).

[6] ROY A, MUKHERJEE S, GUPTA R et al. Structure and properties of magnetoelectric gallium ferrite: a brief review[J]. Ferroelectrics, 473, 154-170(2014).

[7] YAN H, HUANG Y, CUI W et al. Magnetic properties and crystal structure of Ga₂-_xFe_xO₃[J]. Powder Diffraction, 33, 195-201(2018).

[8] ABRAHAMS S C, REDDY J M, BERNSTEIN J L. Crystal structure of piezoelectric ferromagnetic gallium iron oxide[J]. The Journal of Chemical Physics, 42, 3957-3968(1965).

[9] MUKHERJEE S, RANJAN V, GUPTA R et al. Compositional dependence of structural parameters, polyhedral distortion and magnetic properties of gallium ferrite[J]. Solid State Communications, 152, 1181-1185(2012).

[10] TRONC E, CHANÉAC C, JOLIVET J P. Structural and magnetic characterization of ε-Fe₂O₃[J]. Journal of Solid State Chemistry, 139, 93-104(1998).

[11] ARIMA T, HIGASHIYAMA D, KANEKO Y et al. Structural and magnetoelectric properties of Ga₂-_xFe_xO₃ single crystals grown by a floating-zone method[J]. Physical Review B, 70, 064426(2004).

[12] HAN T C, CHEN T Y, LEE Y C. Grain size effect on site-disorder and magnetic properties of multiferroic GaFeO₃ nanoparticles[J]. Applied Physics Letters, 103, 232405(2013).

[13] POPOV Y F, KADOMTSEVA A M, VOROB’EV G P et al. Magnetoelectric effect and toroidal ordering in Ga₂-_xFe_xO₃[J]. Journal of Experimental and Theoretical Physics, 87, 146-151(1998).

[14] MOHAMED M B, SENYSHYN A, EHRENBERG H et al. Structural, magnetic, dielectric properties of multiferroic GaFeO₃ prepared by solid state reaction and Sol-Gel methods[J]. Journal of Alloys and Compounds, 492, L20-L27(2010).

[15] SZYMAŃSKI K, DOBRZYŃSKI L, BAKR M et al. Fe cation occupancies in GaFeO₃ prepared by Sol-Gel and solid-state reaction[J]. Phase Transitions, 83, 824-835(2010).

[16] MUKHOPADHYAY K, MAHAPATRA A S, CHAKRABARTI P K. Enhanced magneto-electric property of GaFeO₃ in Ga₁-_xZn_xFeO₃ (x=0, 0.05, 0.10)[J]. Physica B: Condensed Matter, 448, 214-218(2014).

[17] GHANI A, YANG S, RAJPUT S S et al. Electric modulation of conduction in multiferroic Ni-doped GaFeO₃ ceramics[J]. Journal of Physics D: Applied Physics, 51, 225002(2018).

[18] LEFEVRE C, SHIN R H, LEE J H et al. Reduced leakage currents and possible charge carriers tuning in Mg-doped Ga_0.6Fe_1.4O₃ thin films[J]. Applied Physics Letters, 100, 262904(2012).

[19] SHARMA N, KUMAR S, MALL A K et al. Effect of Zn Doping on Structural and Ferroelectric Properties of GaFeO₃ for Futuristic Spintronic Applications[J]. 2018 IEEE 13th Nanotechnology Materials and Devices Conference (NMDC), IEEE, 1-4(2018).

[20] THOMASSON A, CHERIFI S, LEFEVRE C et al. Room temperature multiferroicity in Ga_0.6Fe_1.4O₃: Mg thin films[J]. Journal of Applied Physics, 113, 214101(2013).

[21] OH S H, SHIN R H, LEFÈVRE C et al. Incorporation of cobalt ions into magnetoelectric gallium ferrite epitaxial films: tuning of conductivity and magnetization[J]. RSC Advances, 5, 34265-34271(2015).

[22] KUMAR RAJEEV, MALL KUMAR ASHISH, GUPTA RAJEEV et al. Raman Effect, Structural and Dielectric Properties of Sol-Gel Synthesized Polycrystalline GaFe₁-_xZr_xO₃ (0≤x≤0.15)[C]. AIP Conference Proceedings, 1725, 1(2016).

[23] HAN T C, LEE Y C, CHU Y T. Effect of cobalt doping on site-disorder and magnetic behavior of magnetoelectric GaFeO₃ nanoparticles[J]. Applied Physics Letters, 105, 212407(2014).

[24] SONG C, YAN X, LIU Q et al. Magnetic and ferroelectric properties of indium-doped gallium ferrite[J]. Journal of Magnetism and Magnetic Materials, 469, 8-12(2019).

[25] SONG S H, LO C C H, LEE S J et al. Magnetic and magnetoelastic properties of Ga-substituted cobalt ferrite[J]. Journal of Applied Physics, 101(2007).

[26] WANG Q X. Effect of Co, Zn and Al Doping on the Structural and Properties for Multiferroic GaFeO₃[J]. Beijing: China University of Mining and Technology, Master’s Dissertation(2014).

[27] LIU C Z. The Study of the Modification and Multiferroic Properties of GaFeO₃ Nano-material[J]. Shanghai: East China Normal University, Master’s Dissertation(2012).

[28] ABRAHAMS S C, REDDY J M. Magnetic, electric, and crystallographic properties of gallium iron oxide[J]. Physical Review Letters, 13, 688(1964).