| 1. | Te , sb and ag were selected as the dopants in the synthesizing process of mg2si , and the influence of dopants and dopants " amount on thermoelectric properties of mg2si specimen was studied 选择te 、 sb 、 ag元素作为掺杂对象,研究了掺杂元素种类和掺杂量对mr _ 2si基热电材料热电性能的影响。 |
| 2. | The aluminates are used as the base and the rare earth materials are used as the luminescence center and trap center . the excitation resource can be visible light and man - made light 它以铝酸盐陶瓷材料为基质,以稀土材料作为掺杂元素形成发光中心和陷阱中心,激发光源可以为目光或人造光源。 |
| 3. | Above investigation shows that the reason why dopant can improve cycling performance is that the bond energy between doped element and oxygen is stronger than that of mn - 0 to stabilize the spinel structure 研究认为,掺杂改善循环性能的主要原因是掺杂元素与氧的键能强于锰与氧的键能而起到了稳定结构的作用。 |
| 4. | Furthermore , since mg had great evaporation ability and the total evaporation amount of mg metal was accessing to the amount of dopants , it must be taken into account when the raw powders were weighted 同时由于mg极易蒸发,其蒸发量与掺杂元素的含量相当,只要控制样品配料时考虑蒸发的mg ,就可以保证产物的化学计量。 |
| 5. | The effects of various additives elements and doping methods on foam nickel electrode ' s performance were studied using constant current charge - discharge test . we compared two doping methods : mechanical mixing doping and chemical co - precipitation doping 利用恒流充放电实验等电化学测试方法研究了不同掺杂元素及掺杂方式对泡沫镍电极的影响作用,对机械混合掺杂和化学共沉积掺杂进行了比较。 |
| 6. | The aluminates are used as the base and the rare earth materials are used as the luminescence center and trap center . the excitation resource can be visible light and man - made light , so this type of long persistent phosphor has the advantages of no - radiation and no need of electricity 它以铝酸盐陶瓷材料为基质,以稀土材料作为掺杂元素形成发光中心和陷阱中心,激发源可以为日光或人造光源,无污染,不消耗电能,是一种高效节能的固体发光显示材料。 |
| 7. | It shows that the particle number will fluctuate with the recombination coefficient ; 3 ) the dynamic process of the n - type doped diamond film is simulated . the particle distributions of s , s + and ar + are gotten . the result has important reference to the investigation of n - type diamond film doping at low temperature ( 3 )对不同气压、偏压和不同的配比情况下n型硫掺杂的金刚石薄膜的动力学过程进行了模拟,得出了掺杂元素s和s ~ +以及惰性气体ar ~ +的粒子数分布,计算结果对掺杂过程的研究有重要的参考价值。 |
| 8. | In this paper , pure and doped ktp crystals were grown from the flux using a top - seeded method , and special technique have been used to lower the electrical conductivity to three orders of magnitude than common flux ktp , the values is up to 10 - 10 ( cm ) - 1 , this overcame the shortcoming that common flux ktp cannot be used in e - o application field because of having higher electrical conductivity . the growth condition , doped elements and annealing technology were investigated . single crystals of ktp with high quality and big z - cut cross section were obtained by optimizing the parameter of crystal growth 本实验采用顶部籽晶熔剂法生长了纯的以及不同掺杂的ktp晶体,用特殊工艺处理技术将普通熔剂法ktp的电导率降低了三个数量级,达到了10 ~ ( - 10 ) ( cm ) ~ ( - 1 ) ,解决了普通熔剂法ktp晶体由于离子电导率太大而无法用于电光应用领域的困难;对ktp晶体的生长条件、掺杂元素以及退火工艺等进行了研究,通过优化生长工艺技术参数,突破了工艺技术生长难关,得到了高光学均匀性、具有大z切面的ktp单晶。 |
| 9. | And the dopping magneto - optical materials were constructed to better meet the demand for the properties of magneto - optical disk recording media materials , forming the series magneto - optical recording media materials and decreasing the making cost by the method of introducing the light and middling rare - earth into the tbfeco materials . the magneto - optical properties and compositions of the tb - fe - co series dopping magnetic - optical film materials were investigated . the results show that when small amount of adulteration element was introduced into the tb - fe - co , the magneto - optical properties of materials are increased . for example the kerr angle and the coercive force are both improved 对轻、中稀土掺杂的tb - fe - co系列磁光薄膜材料进行丁磁光性能和成分的测试,结果表明:在掺杂元素含量较小时,掺杂后的tb - fe - co磁光材料具有较好的磁光性能, kerr转角_ k和矫顽力hc都有所改善,掺杂元素的含量应严格控制,不能超过一定限度,一般一般掺入量应庄10at左右。 |