| 1. | Distribution of y2bacuo5 particles in melt - textured ybco bulk superconductor and its influence on the levitation force
5粒子在准单畴超导块材中的分布及其对磁悬浮力的影响 |
| 2. | Comparing with the simulated width of the single crystal opal , we find that the artificial opals possess poly - crystallize structure and the average single crystal size is around 103um3
与理论计算的单晶光子晶体的透射谱比较，得出了我们制作的opal的单畴在10 ~ 3 m ~ 3 。 |
| 3. | We discuss the relationship of the properties of the wavelength tuning v . s . applied voltage > working temperature and duty - cycles when the voltage applies on the single domain or the dual domain
讨论了ppln在单畴、双畴分别加电压的情况下，其波长调谐特性与外加电压、晶体温度及占空比的关系。 |
| 4. | From the results , the applied voltage is too large while the voltage applies on the single domain or the whole domain in shg process , which will spoil the ppln crystal and can not satisfy the require in experiment
由计算结果可知，无论在单畴加电压或双畴加电压时，需要的电压都太大，可能造成对ppln晶体损坏，无法满足实验中的实际要求。 |
| 5. | Determination of single crystal size in artificial opals by measuring the width of the transmission dip in the f ? direction of face - centered cubic artificial opals with different thicknesses , we determine the size of the single crystal domain in the opal
人工opal光子晶体单畴大小的测定测定了不同厚度的人工opal在? l方向的透射谱，得出opal光子晶体中单畴的尺寸。 |
| 6. | The conclusion is that the main reason for making the magnetic properties lower is because the radius of the particles of magnetic powers is too large and the distribution is irregular , which ca n ' t result in obtaining the single - domain particles
分析了影响材料磁性能的一些重要因素，指出粉末粒径过大以及分布不均，难以获得单畴颗粒是造成材料磁性能不高的主要原因。 |
| 7. | It is found that the specific saturation magnetization decreases with the decrease of the nanocrystallites grain size . the dominating reason is the grain size of the nanocrystallites less than the critical size of the single magnetic domain
发现对于纯净的纳米晶粒来说，饱和磁化强度随着晶粒线度的减小而减小，这主要是因为所制备的纳米晶微粒的晶粒线度小于单畴颗粒的临界粒径。 |
| 8. | The experiments showed us : firstly , mediums with different magnetic and dielectric properties had different influence on the microwave - absorbing properties of spinel ferrite ; secondly , magnetic texture treatment greatly affected the microwave - absorbing properties of the spinel ferrite - based mixed material which contained single - domain particles of hexagonal ferrite , changing the matching thickness , the density of area and the position of absorption peaks and increasing the absorption quantity and the 10db bandwidth ; thirdly , the coupling effect between different layers affected the microwave - absorbing properties of the double - layer spinel ferrite - based mixed material , decreasing its matching thickness and density of area and increasing the position of absorption peaks
实验发现： ( 1 )不同磁性与电性的介质对尖晶石型铁氧体吸波特性的影响不同； ( 2 )磁织构化处理对含有六角晶系铁氧体单畴颗粒的尖晶石型铁氧体基混合吸波材料的性能影响很大，可以改变匹配厚度、面密度与吸收峰峰位，提高吸收量与10db带宽； ( 3 )对于双层材料，层间耦合作用会影响其吸波性能，降低匹配厚度与面密度，提高吸收峰峰位。 |
| 9. | By sims method , we analyzed the profile distribution of mn and c , found that increasing the annealing temperature is beneficial to the diffusion of mn , but has no influence to c . mfm and squid measurements demonstrate that sub micron single - domain magnetic mnas particles found in sample annealing at 850 for 15s show ferromagnetism at room temperature and have a high curie temperature more than 300k
利用二次离子质谱方法对mn和c在样品中的分布进行了研究，发现退火温度的上升，有利于mn的扩散；而对c的分布影响较小。利用磁力显微镜和超导量子干涉仪对样品的磁性质进行了研究。发现在850 + 15s退火处理的样品中形成了亚微米级单畴磁性mnas粒子；经测试其在室温下呈现出铁磁性，居里温度在300k以上。 |
| 10. | Nevertheless , it seems to be quite unsatisfactory for inviestigation the effective properties of systems due to ignoring the realistic structures of the medium . actually , former researches demenstra . te that bo th tiny clusters formed by several magnetic atoms and big dusters formed by magnetic grains exist in films besides isolated grains
实际上，磁组分的形态并不完全是单畴的磁颗粒，还可以是只由几个磁原子构成的磁性小聚集体和由磁颗粒相连形成的大集团，应当区别各种磁阻分形态的贡献。 |
