| 1. | Photoabsorption properties of the thin films composed of ag au nanometer particles and rare - earth oxides
稀土氧化物复合薄膜的光吸收特性 |
| 2. | Rare - earth oxides - determination of silicon oxide - molybdenum blue spectrophotometric method
钼蓝分光光度法测定稀土氧化物中的二氧化硅量 |
| 3. | Microadding a appropriate amount of rare - earths oxide can decrease leakage current by means of raising the height of barrier potential and increasing grain resistivity of zinc oxide
添加微量稀土氧化物通过增大势垒高度和氧化锌晶粒电阻率来减小泄漏电流。 |
| 4. | In short , adding appropriate amount rare - earths oxide can improve potential gradient greatly , decrease leakage current with voltage ratio no changed and make zinc oxide varistor with outstanding comprehensively performance
总之，添加微量稀土氧化物能够显著提高氧化锌压敏阀片的电位梯度、降低漏电流，使其具有优良的综合性能。 |
| 5. | Therefore , adding rare - earths oxides ( nd2os > ceo2 and la2o3 ) with appropriate content decreases the size of zno grain evidently and makes the grain size and distribution more homogeneous , then the zinc oxide varistor show outstanding comprehensively performance
因此， ndzo3 、 ceoz和lazo3加入到氧化锌压敏阀片中，使zno晶粒尺寸减小，并使晶粒分布更为均匀，从而改善了压敏阀片的综合电性能。 |
| 6. | The results of experiment indicated that adding a appropriate amount of rare - earths oxide in zinc oxide varistor led to increase potential gradient greatly , decrease leakage current with voltage ratio no changed . when the nd2o3 content is 0 . 04mol % , potential gradient of zinc oxide varistor is maximum , improves about 65 % compared with zinc oxide varistor no containing nd2o3 , voltage ratio and leakage current are the lowest
当nd _ 2o _ 3含量为0 . 04mol时，氧化锌压敏阀片的电位梯度达到极值，与不含nd _ 2o _ 3的氧化锌压敏阀片相比提高约65 ，且压比最低，漏电流最小，因此本实验nd _ 2o _ 3添加量的最佳值为0 . 04mol 。 |
| 7. | It was the first time that the silica nanoparticles was coated with gd2o3 : eu rare - earth oxides , then the core - shell structure compound particles were obtained . the characterizations showed that the thickness of uniform coating is in 10 - 20nm ; the silica core is linked with the gd2o3 : eu shell by chemical bond si - o - gd ; because of the size effects and interface effects of nano - crystal coating , the diffraction and emission peaks become broadened . and at the same time , the transfer temperature of silica from amorphous to crystal is decreased
首次在纳米sio2表面包覆一层gd2o3 : eu稀土复合氧化物,得到了核-壳结构的复合颗粒，表征结果表明，均匀包覆层的厚度为10 - 20nm ； sio2核和gd2o3 : eu壳层物质之间通过化学键si - o - gd键的作用结合在一起；由于包覆层纳米晶的尺寸效应和界面效应使xrd衍射峰和荧光光谱发射峰出现了宽化现象。 |
| 8. | The influences and mechanisms of rare - earths oxide additives la2o3 on the electrical performance of zinc oxide varistor were explored in this paper . microadded rare - earths oxide in traditional raw materials of zinc oxide varistor , researched the influences of rare - earths oxide on the electrical performance of zinc oxide varistor , and selected the optium composition of various rare - earths oxide additives
在传统配方的氧化锌压敏阀片原料中添加微量稀土氧化物nd _ 2o _ 3 、 ceo _ 2 、 la _ 2o _ 3 ，研究各种稀土氧化物的添加量对氧化锌压敏阀片主要电性能的影响规律，优化氧化锌压敏阀片原料中各种稀土氧化物添加剂的成分。 |
| 9. | Using this expression to calculate the optimum rare - earths oxides ( nd2o3 , ceo2 and la2o3 ) content of zinc oxide varistor , the quantitative calculation results are in accordance with the experimental results approximately . the double shottky potentical barrier was showed in form of catoon using flash , from which we can comprehend the conduction theory of zinc oxide varistor . the electrical properties of varistor can be improved depend on it
运用固体物理、半导体和电子薄膜材料的相关理论，建立数学模型，推导出了最佳掺杂含量的理论计算式，并将之推广到高温烧结的氧化锌压敏陶瓷材料，运用这一计算式定量计算ndzo3 、 ceoz和lazo3等稀土掺杂的最佳含量，计算结果与本文的实验结果比较符合。 |
