| BTO/LAO超晶格性能研究 |
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| 引用本文： | 陈涛,芦苇,朱建国. BTO/LAO超晶格性能研究[J]. 电子科技大学学报(社会科学版), 2008, 0(Z1) |
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| 作者姓名： | 陈涛 芦苇 朱建国 |
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| 作者单位： | 四川大学材料科学与工程学院;中国工程物理院信息中心;成都610064成都医学院物理教研室成都;四川绵阳; |
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| 基金项目： | 国家自然科学基金(60471044) |
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| 摘 要： | 利用横场伊辛模型,考虑四体相互作用,研究了BaTiO3/LaAlO3(BTO/LAO)铁电超晶格的居里温度、介电常数和极化强度与厚度周期的变化关系。发现BTO/LAO铁电超晶格的极化、居里温度和介电影响有显著的尺寸效应,耗散因子对BTO/LAO铁电超晶格的性能影响较大。随着耗散因子的减少,BTO/LAO超晶格的极化强度和居里温度增加,但介电常数几乎不变。当耗散因子σ=2.66时,模拟计算同实验结果相近,表明该理论模型可以作为研究BTO/LAO铁电超晶格的有效方法之一。
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| 关 键 词： | BTO/LAO 铁电超晶格 耗散因子 伊辛模型 |
Influence of Decaying Exponent on the Properties of BaTiO_3/LaAlO_3 Ferroelectric Superlattice |
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| CHEN Tao,,LU Wei,, ZHU Jian-guo. Influence of Decaying Exponent on the Properties of BaTiO_3/LaAlO_3 Ferroelectric Superlattice[J]. Journal of University of Electronic Science and Technology of China(Social Sciences Edition), 2008, 0(Z1) |
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| Authors: | CHEN Tao LU Wei ZHU Jian-guo |
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| Affiliation: | CHEN Tao1,2,LU Wei3,, ZHU Jian-guo1 (1. College of Materials Science , Engineering,University of Sichuan Chengdu 610064,2. Department of Physics,Chengdu Medical of College Chengdu 610081,3. Information Center of Chinese Engineering Physics Institute Mianyang Sichuan 621900) |
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| Abstract: | The transverse Ising model is used to investigate the relations between the thickness period and other parameters, such as polarization, Curie temperature, and dielectric constant of BaTiO3/LaAlO3 (BTO/LAO) superlattice. It was found that the ferroelectric superlattice have a notable size-driven effect on polarization. Decaying exponent has major effect on properties of BaTiO3/LaAlO3 ferroelectric superlattice. When decaying exponent reduces, the polarization and Curie temperature of BaTiO3/ LaAlO3 ferroele... |
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| Keywords: | BTO/LAO decaying exponent ferroelectric superlattice Ising model |
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