使用溶胶凝胶法在Pt/Ti/SiO2/Si衬底上生长不同厚度与不同稀土掺杂(Nd,Ce,La)的BiFeO3(BFO)薄膜,高分辨x射线衍射实验结果表明薄膜是由无择优取向的多晶成份组成,不同厚度和掺杂的薄膜都呈现三方相.对比不同厚度BFO薄膜的结构发现,随着薄膜厚度的增加,薄膜的晶粒尺寸呈现增大的趋势,同时晶格常数也随之增大;比较不同掺杂的薄膜,发现随掺杂原子的离子半径增大(Nd,Ce,La),薄膜的晶粒尺寸随之减小,同时薄膜的晶格参数变小.这些结果表明在BFO薄膜中存在晶粒尺寸效应,BFO的晶格随着晶粒尺寸的增大而增大.
参考文献
| [1] | Hur N;Park S;Sharma P A et al.Electric polarization reversal and memory in a multiferroic material induced by magnetic fields[J].Nature,2004,429:392-395. |
| [2] | Dho J;Leung C W;MacManus-Driscoll J L et al.Epitaxial and oricnted YMnO3 film growth by pulsed laser deposition[J].Journal of Crystal Growth,2004,267:548-553. |
| [3] | Kimura T.;Kawamoto S.;Yamada I.;Azuma M.;Takano M.;Tokura Y. .Magnetocapacitance effect in multiferroic BiMnO3 - art. no. 180401[J].Physical review. B, Condensed Matter And Materials Physics,2003(18):401-0. |
| [4] | W.M. Zhu;Z.-G. Ye .Effects of chemical modification on the electrical properties of 0.67BiFeO_3-0.33PbTiO_3 ferroelectric ceramics[J].Ceramics International,2004(7):1435-1442. |
| [5] | Wang J;Neaton J B;Zheng H et al.Epitaxial BiFeO3 Multiferroic Thin Film Heterostructures[J].Science,2003,299:1719-1722. |
| [6] | Fiebig M;Lottermoser T;Frohlich D et al.Observation of coupled magnetic and electric domains[J].Nature,2002,419:818-820. |
| [7] | Nicola A. Hill .Why Are There so Few Magnetic Ferroelectrics?[J].The journal of physical chemistry. B, Materials, Surfaces, Interfaces & Biophysical,2000(29):6694-6709. |
| [8] | Blaauw C;Woude F .Magnetic and structural properties of BiFeO3[J].Journal of Physics C:Solid State Physics,1973,6:1422-1431. |
| [9] | C.Michel;K.-M.Moreau;G.D.Achenbach;R.Gerson et al.The atomic structure of BiFeO3[J].Solid State Communications,1969,7:701-704. |
| [10] | Zuci Quan;Hao Hu;Sheng Xu .Surface chemical bonding states and ferroelectricity of Ce-doped BiFeO3 thin films prepared by sol-gel process[J].Journal of Sol-Gel Science and Technology,2008(3):261-266. |
| [11] | Park JS;Kim CO;Lee YP;Lee YS;Shin HJ;Han H;Lee BW .Influence of grain size on the electronic and the magnetic properties of La0.7Ca0.3MnO3-delta[J].Journal of Applied Physics,2004(4):2033-2036. |
| [12] | B. Jiang;J. L. Peng;L. A. Bursill .Size effects on ferroelectricity of ultrafine particles of PbTiO_(3)[J].Journal of Applied Physics,2000(7):3462-3467. |
| [13] | W.Y.Shih;W.H.Shih;L A.Aksay .Size dependence of the ferroelectric transition of small BaTiO3 particles:Effect of depolarization[J].Physical Review B,1994,50:15575-15585. |
| [14] | Sinnamon L J;Saad M M;Bowman R M et al.Exploring grain size as a cause for dead-layer effects in thin film capacilors[J].Applied Physics Letters,2002,81:703-705. |
| [15] | Jang-Sik Lee;Seung-Ki Joo .Analysis of grain-boundary effects on the electrical properties of Pb(Zr,Ti)O_(3) thin films[J].Applied physics letters,2002(14):2602-2604. |
| [16] | Tsunekawa S;lto S;Mori T et al.Critical size and anomalous lattice expansion in nanocrystalline BaTiO3 panicles[J].Physical Review B,2000,62:3065-3070. |
| [17] | Zhao Z;Buscaglia V;Viviani M et al.Grain-size effects on the ferroelectric behavior of dense nanocrystalline BaTiO3 ceramics[J].Physical Review B,2004,70:024107. |
| [18] | Karimi, S;Reaney, IM;Han, Y;Pokorny, J;Sterianou, I .Crystal chemistry and domain structure of rare-earth doped BiFeO3 ceramics[J].Journal of Materials Science,2009(19):5102-5112. |
| [19] | Mackenziel J D;Xu Y H .Ferroelectric Materials by the Sol-Gel Method[J].Journal of Sol-Gel Science and Technology,1997,8:673-679. |
| [20] | Liu HR;Liu ZL;Liu Q;Yao KL .Ferroelectric properties of BiFeO3 films grown by sol-gel process[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,2006(1/2):105-109. |
| [21] | Kothari D;Reddy VR;Sathe VG;Gupta A;Banerjee A;Awasthi AM .Raman scattering study of polycrystalline magnetoelectric BiFeO3[J].Journal of Magnetism and Magnetic Materials,2008(3/4):548-552. |
| [22] | Goldenberg L M;Wagnera J;Stumpea J .Ordered arrays of large latex particles organised by vertical deposition[J].Materials Science and Engineering C,2002,22:405-408. |
| [23] | Birks L S;Friedman H .Particle Size Determination from X-Ray Line Broadening[J].Journal of Applied Physics,1946,17:687-692. |
| [24] | C. Wiemer;S. Ferrari;M. Fanciulli;G. Pavia;L. Lutterotti .Combining grazing incidence X-ray diffraction and X-ray reflectivity for the evaluation of the structural evolution of HfO_2 thin films with annealing[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,2004(1):134-137. |
| [25] | Bhaskar A;Chang TH;Chang HY;Cheng SY .Low-temperature crystallization of sol-gel-derived lead zirconate titanate thin films using 2.45 GHz microwaves[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,2007(5):2891-2896. |
| [26] | Hu H Q;Li M Y;Yu B F et al.Enhanced multiferroic properties of BiFeO3 thin films by Nd and high-valence Mo co-doping[J].Journal of Physics D:Applied Physics,2009,42:185010. |
| [27] | A.Z. Simoes;C.S. Riccardi;L.S. Cavalcante;A.H.M. Gonzalez;E. Longo;J.A. Varela .Size effects of polycrystalline lanthanum modified Bi_4Ti_3O_(12) thin films[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2008(1):158-167. |
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