1) Rietveld refinement
Rietveld结构精修
1.
The crystal structures of some high-crystallinity products are refined by the X-ray diffraction Rietveld refinement method, their crystal models are upbuilt.
选取高结晶度的类水滑石材料进行X射线粉末衍射Rietveld结构精修，建立了晶体结构模型。
2.
Meanwhile,the Rietveld refinement method was employed to study the effect of Lu doping on the crystal structure.
采用Rietveld结构精修的方法研究了不同掺杂量对晶体结构的影响,研究表明,体系的固溶区范围大约为x=0。
2) Rietveld structure refinement
Rietveld结构精修
3) Rietveld structure refinment
Rietveld结构修正
4) Rietveld structural refinement
Rietveld结构精化
5) rietveld refinement
Rietveld精修
1.
The crystal structure of Gd2O2SO4 was studied with X-ray powder diffraction data using powder solve and Rietveld refinement method,operated within the Reflex module of Materials Studio 4.
0 Reflex模块中Powder solve技术和Rietveld精修方法对Gd2O2SO4的晶体结构进行了研究。
2.
The three series of polycrystalline samples were prepared by conventional solid state reaction method,and then the structural analysis was carried out by Rietveld refinement using the FullProf_Suite package.
用固相法制备了上述系列样品,并用FullProf_Suite软件进行Rietveld精修,系统研究了材料的结构和磁性质,结论如下:(1)对于La_(0。
3.
Co-Si alloy was synthesized by arc melting method,Rietveld refinement test showed that the Co-Si alloy consists of 87.
电弧熔炼法制备了Co-Si合金,Rietveld精修表明Co-Si合金由CoSi_2和CoSi两相组成,相丰度分别为87。
6) Rietveld refinement
结构精修
1.
The type and the chemical state of non-framework aluminum and the related influence on zeolite acidity were investigated by means of 27Al MAS NMR,N2 adsorption-desorption,XRD Rietveld refinement.
采用27Al MAS NMR、N2吸附-脱附、IR等表征技术及XRD Rietveld结构精修的方法,通过清除和交换引入非骨架铝,探讨了USY沸石中非骨架铝的形态。
补充资料：结构精修
分子式：
CAS号：
性质：对解析所得粗结构中原子坐标等参数的精化称作精修。晶体结构精修的实质与过程可归结为在已有逼近真值的m个初始结构参变量(诸j原子的坐标、热参数、占有率)xj等的条件下，设法调节m个结构参数量，使n个结构因子模的计算值∣Fc∣最大限度地逼近n个结构因子模的实验值∣Fo∣的计算问题。精修中一般采用最小二乘法，基于对函数D≡∑[∣Fc∣n(x1，…xj，…xm，)_∣Fo∣n]2。派生的等满足极值的条件，建立m个正规方程及相应的系数矩阵。待求的m个结构参变量的修正量可通过全矩阵或块矩阵精修导出。
CAS号：
性质：对解析所得粗结构中原子坐标等参数的精化称作精修。晶体结构精修的实质与过程可归结为在已有逼近真值的m个初始结构参变量(诸j原子的坐标、热参数、占有率)xj等的条件下，设法调节m个结构参数量，使n个结构因子模的计算值∣Fc∣最大限度地逼近n个结构因子模的实验值∣Fo∣的计算问题。精修中一般采用最小二乘法，基于对函数D≡∑[∣Fc∣n(x1，…xj，…xm，)_∣Fo∣n]2。派生的等满足极值的条件，建立m个正规方程及相应的系数矩阵。待求的m个结构参变量的修正量可通过全矩阵或块矩阵精修导出。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条