| 1. | Quantum paraelectrics are quite different from the normal ferroelectrics as far as the dielectric susceptibility is concerned
量子顺电体是一类特殊的电介质，和通常的铁电体有所不同。 |
| 2. | 2 . two mechanisms of flow acceleration have been discovered by flow visualization , that is , paraelectric and peristaltic
二、进行了流动显示实验，揭示了电流体顺电效应和蠕动效应两种加速机理。 |
| 3. | Eutio3 is another special quantum paraelectric . it is at the same time a type - g antiferromagnet . so we call it quantum paraelectric - antiferromagnet
Eutio _ 3是另一种特殊的量子顺电体，该材料同时也是尼尔反铁磁体，我们称它为量子顺电-反铁磁体。 |
| 4. | The crystal structure of the quantum paraelectrics is mainly perovskite type , similar to most of the ferroelectrics , and external factors , e . g . impurity doping , may induce ferroelectric phase
量子顺电体的结构和铁电体很相似，大部分属于abo _ 3的钙钛矿结构，所以应力或掺杂等易使之成为铁电体。 |
| 5. | But at low temperatures it deviates from the curie - weiss behavior and saturates at even lower temperatures , which can be attributed to the effect of quantum fluctuation that stabilizes the paraelectric phase and suppresses the ferroelectric phase transition entirely
量子顺电体的介电常数在低温时呈现类似于居里-外斯定律的行为，即显示出将要发生铁电相变的征兆，但直至最低温度都不发生铁电相变。 |
| 6. | The resultant electric field will be asymmetric and vary along specific direction when asymmetric electrode strips or multi - phrase driving is employed , which cause flow accelerate . that is the essential of paraelectric and peristaltic . 3
采用非对称的电极分布或者在对称分布的电极上施加多相位的激励电压，合成了一个非对称而且是沿着某个方向变化的电场促使流动加速，这就是顺电加速效应和蠕动加速效应的本质。 |
| 7. | Abstract : on the basis of the theory of controlled phase - changes of piezoceramics , high - temperature polarizing technology makes initial working temperature a little higher than curie temperature of a sample , but the polarization voltage needed is greatly lower than the one needed in normal polarization ( only 1 / 10 - 1 / 5 ) . the improved polarizing technology can make polarization more complete
文摘:压电陶瓷的高温极化是利用受控的场致有序化的顺电铁电相变原理，使起始极化温度略高于样品的居里温度，但所需的极化电压大大低于常规极化，仅为1 / 10 - 1 / 5 ；选择较高的降温升压速率，可使极化趋于更加完全，具有常规极化工艺无可比拟的优越性。 |
| 8. | Some cubic perovskites are good cases in point such as srtio3 and ktao3 . experimental results show that when ba2 + and li + are doped into the above materials respectively and at the same time the impurity content is higher than their critical concentration , the impurity induced ferroe lectric phase transition occurs
Srtio _ 3和ktao _ 3是典型的量子顺电体，实验表明当两者分别掺杂ba ~ ( 2 + )和li ~ +且杂质浓度超过各自的临界浓度时，顺电相不再稳定，出现由杂质导致的铁电相变。 |
| 9. | In this paper , we first investigate the impurity effect ( ba2 + ) on the dielectric and phase transition properties in srtio3 within the framework of the transverse - field ising model ( tim ) . then a possible coupling mechanism between the magnetism and dielectric properties in eutio3 is discussed and the magnetic influence on the frequency of the soft - phonon mode is investigated via the heisenberg model , soft - mode theory under the mean field approximation , the second quantization theory and the perturbation theory . and we proceed further investigation on eu1 - xbaxtio3 of
我们发现baxeul _ xtio3 ( o ‘ x ‘ 0 . 2 )的介电常数和由内察的偏置场导致的电极化除了随杂质浓度产生相应的变化，同时在磁和介电性质的藕合作用影响下在低温下偏离通常的量子顺电体行为，在尼尔温度附近出现异常，且磁场通过对最近邻自旋关联的作用来影响介电常数和电极化。 |
