| 1. | Spontaneous polarization and piezoelectric responses of pzt thin films
薄膜的自发极化与压电响应 |
| 2. | The spontaneous polarity was firstly observed by electron - beam bombardment and scanning electron microscope ( stm )
利用电子束轰击和扫描成像手段，首此观察到了电气石的自发极化导致的电极性。 |
| 3. | The tourmaline with great spontaneous polarity can purify water and air . so it can be used in building decorating material , purifying water materials and cleaning air materials
自发极化强度大的电气石具有净化空气和水的作用，在环保建筑装饰材料、净化水和空气材料中有很大的应用价值。 |
| 4. | The hit spot was round or circle on the crystal plane . therefore , the intensity of spontaneous polarity and the direction of polarity could be judged by the shape of the electron - beam bombardment spot
因此根据电子束打击斑的形貌可判断电气石的自发极化强度和方向， “打击斑”亮的一端为负极，暗的一端为正极。 |
| 5. | In the system , the dipoles " appearance and parallel arrangement lead to occurrence of spontaneous polarization , which is the essence of ferroelectrics phase transition . the interaction between dipoles is long - distance coulomb force
铁电相变的实质是系统中电偶极矩的平行排列导致自发极化的出现，电偶极矩的相互作用是长程库仑力。 |
| 6. | The hit spot of elliptic shape appeared on crystal plane paralleling to c axis , and one half was brighter than the other half under sem . the brighter part was the negative pole , and the darker one was the positive pole
自发极化大的电气石在平行于c轴的晶面上出现“哑铃形”或长的“椭圆形”明暗对比的打击斑，在垂直于c轴的端面上则出现无明暗对比的斑点。 |
| 7. | It was found that the schorl or dravite in schorl - dravite group that is produced from pegmatite and has good crystal degree had a strong intensity of spontaneous polarity by electron - beam bombardment and x - ray diffraction of varying the temperature
利用电子束轰击结合变温xrd分析发现在schorl - dravite系列电气石中，产于伟晶岩的，结晶度比较高的mg电气石或fe电气石具有较高的自发极化强度。 |
| 8. | We have developed the theory of boundary shielding approximation of electric polarization , from which the values of spontaneous polarization of some typical ferroelectric materials can be derived . the shielded charges in ferroelectricity are in the state of surface bound polaron - dipole whose creation and annihilation must span a potential barrier . by introducing statistical method , four types of typical electric hysteresis loops of some common crystals and ceramics have been given , which are well consistent with the experimental results
利用电极化的边界屏蔽近似，可计算出一些典型铁电单晶的自发极化强度.铁电屏蔽电荷处于表面束缚极化子偶状态,其产生和湮没要跨越位垒.由统计方法给出的一些常见晶体和陶瓷的四种典型电滞回线形状，和实验观察到的结果一致 |
| 9. | Organic - inorganic nanocomposite , which are the complex of inorganic nanopraticles with organic compound , is a popular study subject in nanoscale composite . the nanocomposite can not only take advantage of several advantage , but also produce new properties . in this thesis , taking account of the problems in electrorheological fluids such as high leakage current , low yield stress and stability , the pan - batio3 nanocomposite with different structure are prepared by in - situ complex technology and modified sol - gel method
根据目前电流变液中出现的问题(如屈服应力不够高，漏电流密度不够低，稳定性不够好等问题) ，基于聚苯胺有较高的热稳定性，且密度又小，特别是聚苯胺的介电常数和电导率均可按需调整，此外，钛酸钡无机纳米粒子作为一种无机铁电体，在电场作用下具有自发极化的能力，一方面可以为体系提供高的介电常数，另一方面又可保证体系的绝缘性能。 |
