取向生長(zhǎng)bi4ti3o12鐵電薄膜的回線(xiàn)動(dòng)力學(xué)標(biāo)度畢業(yè)論文-資料下載頁(yè)
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【正文】 但與隨機(jī)取向薄膜相比數(shù)量要少，因此A隨E0的增加會(huì)更平緩。，這在標(biāo)度關(guān)系中的表現(xiàn)就是飽和回線(xiàn)的標(biāo)度指數(shù)中b值大小關(guān)系為，隨機(jī)取向大于a/b軸擇優(yōu)取向。結(jié)論1. 結(jié)果表明，高電場(chǎng)條件下隨機(jī)取向Bi4Ti3O12薄膜的標(biāo)度關(guān)系為： A∝f 。a/b軸低擇優(yōu)取向度的Bi4Ti3O12鐵電薄膜的標(biāo)度關(guān)系為：A∝f 。a/b軸高擇優(yōu)取向度的Bi4Ti3O12鐵電薄膜的標(biāo)度關(guān)系為：低頻段A∝ ；高頻段A∝f 。2. Bi4Ti3O12薄膜飽和回線(xiàn)面積A，即電疇翻轉(zhuǎn)消耗的總能量，隨a/b軸取向度的增強(qiáng)而增大。3. Bi4Ti3O12薄膜取向度越高，飽和回線(xiàn)對(duì)應(yīng)的疇翻轉(zhuǎn)越充分。參考文獻(xiàn)致 謝本文是在導(dǎo)師盧朝靖教授和張永成老師的悉心指導(dǎo)下完成的。盧老師誨人不倦的高尚情操、勤奮嚴(yán)謹(jǐn)?shù)闹螌W(xué)風(fēng)范和淵博的學(xué)識(shí)將使我終身受益。研究選題體現(xiàn)了導(dǎo)師高瞻遠(yuǎn)矚開(kāi)闊敏銳的思維，實(shí)驗(yàn)工作凝聚了導(dǎo)師大量的心血。在此，謹(jǐn)向盧老師表示誠(chéng)摯的感謝和深深的敬意。特別感謝張永成老師在鐵電性能測(cè)試方面與回線(xiàn)動(dòng)力學(xué)標(biāo)度方面給予我耐心細(xì)致具體的指導(dǎo)。感謝實(shí)驗(yàn)室?guī)熜謳熃愫屯瑢W(xué)對(duì)我的支持、鼓勵(lì)和幫助。最后衷心感謝我的父母，感謝他們給予我無(wú)私的愛(ài)與堅(jiān)強(qiáng)的支持！參考文獻(xiàn)參考文獻(xiàn)[1] .[M].北京：科學(xué)出版社,2003.[2] 李超, 葉萬(wàn)能, 張永成等. 沿a/(自然科學(xué)版), 2010, 23(2): 1216[3] 喬燕. Bi4Ti3O12鐵電薄膜及鐵電儲(chǔ)存器. 江漢大學(xué)學(xué)報(bào)（自然科學(xué)版），20040100203[4] Scott J F. in Thin Film Ferroelectric Materials and Devices, edited by R. Ramesh(Kluwer Academic, Boston, 1997), p. 115[5] Li S P, Cao W W and Cross L E. The extrinsic nature of nonlinear behavior observed in lead zirconate titanate ferroelectric ceramic [J]. J. Appl. Phys., 1991, 69: 72197224[6] Rao M and Pandit R. Magnetic and thermal hysteresis in the O(N)symmetric (Φ2)3 model [J]. Phys. Rev. B, 1991, 43: 33733386[7] Liu J M, Chan H L, L Choy C. Scaling behavior of dynamic hysteresis in multidomain spin systems [J]. Mater. Lett. 2002, 52: 213219[8] Liu J M, Pan B, Yu H, et al. Dynamic hysteresis dispersion scaling of ferroelectric Ndsubstituted Bi4Ti3O12 thin films [J]. J. Phys.: Con. Matt., 2004, 16: 11891195[9] Liu J M, Yu H, Pan B, et al. Dynamic scaling of hysteresis dispersion in ferroelectrics [J]. Mater. Scie. And Engi. B, 2005, 118: 26 [10] Yimnirun R, Laosiritaworn Y, Wongsaenmai S, et al. Scaling behavior of dynamic hysteresis in soft lead zirconate titanate bulk ceramics [J]. Appl. Phys. Lett., 2006, 89: 162901 [11] Orihara H, Hashimoto S, Ishibashi Y. A Theory of DE Hysteresis Loop Based on the Avrami Model [J]. J. Phys. Soc. Jpn., 1994, 63: 10311035[12] Yimnirun R, Wongmaneerung R, Wongsaenmai S, et al. Dynamic hysteresis and scaling behavior of hard lead zirconate titanate bulk ceramics [J]. Appl. Phys. Lett., 2007, 90: 112908[13] Chapman D W. Some thin‐film Properties of a New Ferroelectric Composition [J]. J. Appl. Phys., 1969, 40: 23812385[14] Ding Y, Liu J S, Qin H X, et al. Why lanthanumsubstituted bismuth titanate bees fatigue free in a ferroelectric capacitor with platinum electrodes [J]. Appl. Phys. Lett., 2001, 78: 41754177 [15] Liu J M, Yu H, Pan B,Chen,X,Y,et al. Dynamic scaling of hysteresis dispersion in ferroelectrics [J]. Mater. Scie. And Engi. B, 2005, 118: 26
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