| 1. | Crystal structure and metal - insulator transition properties of dc magnetron sputtered la0 . 825sr0 . 175mno3 films 直流磁控溅射沉积锰酸锶镧薄膜的结构与相变特性研究 |
| 2. | Due to the difference of coordination number , the honeycomb lattice and the square lattice display different transition properties 对于不同的二维点阵,由于配位数的不同,也导致了相变特性的一些区别。 |
| 3. | The second part is the mode transition property and the energy occupation of each mode in step - index optical fiber according to the mode solution 结果表明, te _ ( 11 )模是阶跃光纤中传播的基模,并占有总能量的大部分。 |
| 4. | The dependence of the electron in 4i _ ( 13 / 2 ) level on the measured temperature and the radiative transition property of different stark sub - level were discussed 讨论了~ 4i _ ( 13 2 )能级电子布局随测量温度的变化以及不同stark劈裂态电子向下辐射跃迁的特性。 |
| 5. | Third , the mode solution is obtained using the separation of variables . the last , the mode transition property is discussed when the plane wave transmit in the step - index optical fiber 再次,利用分离变量法推导出平面波在阶跃光纤中传播的模式表达式,讨论了光波在光纤中传播的模式特性。 |
| 6. | This article mainly discusses the phase transition properties of random transverse field mixed spin ferromagnetic system with crystal field . the phase diagrams display the curie temperature dependences of the crystal field , the transverse field and the trimodal random concentration for the honeycomb lattice and the square lattice 在本文中我们采用随机横场与晶场共同作用下的混合伊辛自旋模型,计算并讨论了二维的蜂窝格子和平方格子系统的居里温度随晶场、横场和随机浓度的变化关系。 |
| 7. | Within the framework of the tim ( transverse field model ) , using the eft ( effective field theory ) and the mft ( mean field theory ) , considering the long - range effects and the interfacial effect , we studied the transition properties of the ferroelectric thin film , pyroelectric coefficient and dielectric susceptibility and triple hysteresis loop of the ferroelectric bilayer structure theoretically 我们应用平均场、有效场等方法,在横场伊辛模型框架内,考虑赝自旋间长程相互作用和界面效应,对铁电薄膜、双层薄膜的相变、热释电、介电,以及电滞回线等性质进行了较深入的研究。 |
| 8. | 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。 |