1) 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。
2) 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。
3) Rietveld structure refinement
Rietveld结构精修
4) Rietveld structure refinment
Rietveld结构修正
5) Rietveld structural refinement
Rietveld结构精化
6) Rietveld method
Rietveld法
1.
A sample of the Sb 2O 3 which contains both type of cubic Sb 2O 3 and orthorhombic Sb 2O 3 was performed quantitative phase analysis by Rietveld method.
用Rietveld法对含有立方和正交两种晶型的Sb2O3样品进行了定量相分析,该样品含立方晶型和正交晶型的Sb2O3分别为(质量分数)97。
2.
The crystalline structure of hydroxyapatite (HA) powders sintered at different temperatures of 600, 800, 1 000 and 1 200℃ was studied by means of X-ray diffraction and Rietveld method.
采用X射线衍射法和Rietveld法研究了羟基磷灰石(hydroxyapatite,HA)粉末在不同温度下烧结后的晶体结构,并对其进行结构模拟与解析。
3.
The X-ray diffraction (XRD) patterns were calculated analogically by using Rietveld method and the phase content in rare-earth two phase Nd2Fe14B/α-Fe magnet was determined based on standardless quantitative phase analysis.
用Rietveld法模拟计算稀土双相永磁合金Nd2Fe14B/α-Fe的X射线衍射谱(XRD),并根据多相体模型与无标定量相分析法确定各物相的含量。
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