查询词典 x ray diffraction

The optical waveguides fabricated by using single benzoic acid and 60% ratio dilution were analyzed by double crystal X-ray diffraction.

用双晶X射线衍射法对单苯甲酸和混合摩尔比为60%制作的光波导进行X射线衍射。

The Fe57-xCo18Nb4Al2Si4B15Smx(x=0-3) amorphous alloy ribbons were prepared byvacuum arc melting and melt spinning. The influences of Sm addition on the glass forming ability, thermal stability, crystallization behavior and magnetic properties of Fe57-xCo18Nb4Al2Si4B15Smx amorphous alloys were studied by X-ray diffraction, differential thermal analyzer and vibration sample magnetometer survey.

摘 要：采用真空电弧熔炼和真空熔融甩带法制备Fe57-xCo18Nb4Al2Si4B15Smx(x=0~3)非晶合金，借助X射线衍射、差热分析以及振动样品磁强计等手段研究稀土元素Sm对制备合金的非晶形成能力、非晶热稳定性、非晶晶化行为以及磁性能的影响。

In-situ energy dispersive X-ray diffraction measurements of enstatite have been studied by using diamond anvil cell with synchrotron radiation and laser heating in the range of 0~23 GPa and

采用同步辐射能量色散X射线衍射技术、激光加热技术和金刚石对顶砧高压装置，在温度为2000 K和压力为23 GPa的范围内，对采自地幔二辉橄榄岩中的顽火斜方辉石，进行了原位的高温高压能量色散X射线衍射测量。

The formation of chromium nitrides was analyzed with glancing angle X-ray diffraction spectrometry using a Philips(PW3710) XRD at Korea Basic Science Institute.

在韩国基础科学研究所运用飞利浦X射线衍射仪（PW3710）对铬氮化物的形成进行了掠射角X射线衍射光谱分析。

Crystal structure was determined by powder X-ray Diffraction and lattice parameters as a function of Sr-concentration x were obtained by using Rietveld method.

在80K-300K温度范围的直流电阻率测量表明，材料的电性质在x=0.2和0.3之间展示了从半导体到金属的相变。x=0.2样品已接近绝缘体-金属相变的边缘。

In the paper, the multidentate carboxylic acid ligands were used to combine with Cd, resulting in the three dimensional MOCPs single crystals—C12H16CdN2O8, with a low temperature hydrothermal synthesis method. The sample was characterized with IR spectra to affirm the organic groups in the frameworks, single-crystal X-ray diffraction to determine the crystal structure and composition of the frameworks, N2 adsorption isotherms at low temperature to measure the specific surface area and pore size distribution, and with TGA/DGA analysis to scale the thermal stability. Furthermore, the dissolution property and the photocatalytic activity of MOCPs under the ultraviolet ray condition were explored.

本文用低温水热合成法，用多齿羧酸配体异烟酸和Cd配位合成出[Cd(C6H4O2N)2(H2O)4]∞三维晶体并进行了表征：采用红外光谱法确认骨架中的有机官能团；用单晶X射线衍射分析法测定MOCPs的晶体结构，并确定其骨架的组成；通过低温氮气吸附等温线测定了其比表面积和孔径分布；以热重分析和差热分析测定材料骨架的热稳定性；测定了晶体的溶解性能；最后以亚甲基蓝为目标降解物，对[Cd(C6H4O2N)2(H2O)4]∞的光催化活性及亚甲基蓝的氧化动力学进行了探索(来源：A2444BC论文网www.abclunwen.com)。

The crystal was obtained from the interaction system, NH4VO3/H2O2/ 2-(2′-pyridyl)imidazole, in aqueous solution under the physiological conditions, and the complex was characterized by solution NMR, IR, X-ray crystal diffraction and elementary analysis.

经NMR、IR、X-ray衍射和元素分析等谱学方法或分析手段确定其组成[NH4{OV(O2)2{2-(2′-Py)-Imi}·4H2O}]和结构，其51V的化学位移在单核双过氧钒化合物中是最大的。

The analysis with X-ray diffraction, scanning electron microscopy, and energy dispersive spectrometer indicates that the fine TiFe(subscript 1-x)Cr particles distribute on the surface of magnesium base, acting as some catalysis sites, which improves the hydrogenating and dehydrogenating properties.

通过XRD、SEM、EDS分析研究表明，TiFe(下标 1-x)Cr(x=0， 0.3)合金粉以细小颗粒的形式分散镶嵌在镁粉基体上成为催化活性点，改善了体系的吸放氢性能。

Its structure is analyzed by means of thermal gravimetric analysis, infrared-ray spectrum, X-ray diffraction and scanning electron microscopy.

采用热失重分析、傅立叶转换红外光谱分析、X射线衍射和扫描电镜对其结构进行了表征与分析。

In this work, nanostructure samples of La1-xCaxMnO3（x=0.2、0.3、0.4、0.5）were prepared by hydrothermal-precipitation method . The structural characterization of the powder samples were done by X-ray diffraction. XRD patterns showed that all the samples ate single perovskite-type phase withoutother impurity or secondary phase. The shape and size of samples were performed on Scanning Electron Microscopy. SEM photographs investigated that temperature of hydrothermal effects the phase of samples and alkalinity of the reaction mixture by ΔTad-T curve measurement device at low magnetic fielded

本论文采用水热共沉淀退火法制备了La1-xCaxMnO3（x=0.2、0.3、0.4、0.5）系纳米结构，用X射线衍射仪确定产物为单相钙钛矿结构，无任何杂峰及第二相；用扫描电子显微镜与透射电子显微镜分析了产物的大小和形貌，发现水热温度对产物的形成起决定作用，随着温度的升高，产物由薄膜状向丝状转变，而溶液的碱度可控制产物的形貌和大小，当碱度为6.35mol/L，水热温度为240 C时，La0.6Ca0.4MnO3的主要形貌为纳米丝并有少量纳米颗粒，纳米丝平均直径为40nm；最后测量了粉末样品在低磁场（1.4T）下的磁热效应，发现水热共沉淀退火法制备样品的最大绝热温度明显高于球磨法制备样品的最大绝热温变。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。