SrTiO3基多功能陶瓷的晶界结构与晶界能

用高分辨透射电子显微镜（ＨＲＥＭ）观察和分析了ＳｒＴｉＯ３陶瓷中洁净晶界的结构，提出了晶界处原子排布模型，用弹性位错理论推出了描述晶界能与晶粒间失配角关系的方程。晶界能由晶界核心能和伴有晶界应变场的弹性位错能组成，通过对［郾１］和［１１０］倾斜晶界晶界能的模拟，证实了该模型的可行性。     

计算机智能化在SrTiO3系电容—压敏陶瓷制备中的应用

将计算机的智能系统应用于电容－压敏材料的研制，提出了对ＳｒＴｉＯ３系电容－压敏陶瓷的制备进行智能化设计的思想和实施方案，在大量实验数据的基础上，建立了数据库和智能设计系统，对电容－压敏陶瓷进行了优化设计，通过实践，证实了优化设计系统的可行性。     

Ca^2＋离子对Na扩散（Sr,Ca）TiO3系电容—压敏陶瓷结构与性能的影响

研究了Ｃａ＾２＋离子（＜５０ｍｏｌ％）对Ｎａ扩散（Ｓｒ，Ｃａ）ＴｉＯ３系电容－压敏陶瓷结构与性能的影响。ＸＲＤ及ＩＲ吸收谱的实验结果表明，Ｃａ＾２＋离子的加入，使立方钙钛矿结构发生畸变。这些结构上的变化，使得当Ｃａ＾２＋离子含量增加时，晶粒电阻率上升，晶粒尺寸减小；在Ｃａ＾２＋离子的含量约小于３０ｍｏｌ％时，随Ｃａ＾２＋离子含量的增加，经Ｎａ扩散热处理后陶瓷的视在介电系数增加，压敏电压降低。尤其是     

计算机智能化在SrTiO_3系电容─压敏陶瓷制备中的应用

将计算机的智能系统应用于电容－压敏材料的研制．提出了对ＳｒＴｉＯ３系电容－压敏陶瓷的制备进行智能化设计的思想和实施方案．在大量实验数据的基础上，建立了数据库和智能设计系统．对电容－压敏陶瓷进行了优化设计，通过实践，证实了优化设计系统的可行性     

多孔硅材料的电致发光特性及多孔形成机理的研究

系统考察了衬底硅材料的掺杂类型，晶向，阳极氧化电流密度时间等工艺条件对多孔硅电致发光特性的影响，考察了其微观结构，实验表明，电流密度的增大或氧化时间的增长，使多孔硅的发光射谱“蓝移”，发光持续时间延长，当ＨＦ与乙醇的配比为１：１时，有较强的发光强度。     

Certain Properties of a Quantum Information Network Driven by External Fields

A quantum information network with the structure of the property and information characteristic is studied. Under Gaussian channel is proposed. The network topological the catastrophic and exponential external field driving, the degree distribution has the spatial and temporal characteristics, and the positive or negative power index appears, which can influence the assortativity coefficient. This is possibly helpful to open a way to using the different type of driving to introduce the expected properties for the network.     

DIELECTRIC AND PYROELECTRIC CHARACTERISTICS AND FERROELECTRIC SOFT MODES IN PbTiO3 POLYCRYSTALS DOPED WITH Ca2+

The effects of Ca²⁺ ions on the structure and dielectric and pyroelectric characteristics of PbTiO₃ polycrystals were investigated. With increasing content of Ca, a decrease in tetragonal axial ratio (c/a) was observed as a consequence of shrinkage of the lattice parameter c. The dielectric constant and pyroelectric coefficient increase and Curie temperature (T_C) shifts toward lower temperature with increasing content of Ca. The theory of ferroelectric soft mode has been developed to illuminate the relationship between the structure and properties of the polycrystal.     

分类讨论思想在小学数学中的作用①

新课标教学方法提出以后，对小学数学提出了新的要求，要求学生在学习的过程中，对数学知识进行扎实掌握的同时，还要掌握一定的数学思想．解题方法，进一步提高思维的灵敏性，其中分类讨论思想就是其中的亮点，通过对分类思想的学习与掌握，提高学生会独立的思考问题，概括问题题，总结相关数学规律的能力，从而丰富学生的思维.     

DIELECTRIC AND PYROELECTRIC CHARACTERISTICS AND FERROELECTRIC SOFT MODES IN PbTiO3 POLYCRYSTALS DOPED WITH Ca2+

The effects of Ca²⁺ ions on the structure and dielectric and pyroelectric characteristics of PbTiO₃ polycrystals were investigated. With increasing content of Ca, a decrease in tetragonal axial ratio (c/a) was observed as a consequence of shrinkage of the lattice parameter c. The dielectric constant and pyroelectric coefficient increase and Curie temperature (T_C) shifts toward lower temperature with increasing content of Ca. The theory of ferroelectric soft mode has been developed to illuminate the relationship between the structure and properties of the polycrystal.