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首页> 外文会议>International Conference on Technologies and Materials for Renewable Energy, Environment and Sustainability >Study the Structural and Optical Properties of Magnesium Sulphate Heptahydrate Single Crystal Grown by Solution Growth Method
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Study the Structural and Optical Properties of Magnesium Sulphate Heptahydrate Single Crystal Grown by Solution Growth Method

机译：研究溶液生长法生长硫酸镁庚酸镁单晶的结构和光学性质

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Single crystals with considerable dimensions were successfully grown by the natural evaporation method from aqueous solutions. Pure (MgS04.7H20), doped with Ni (Mgl-yNiyS04.7H20 where y= 0, 0.5,1,3 and 5% mol) and with changing the acidic medium of the solution (where pH=7, 5, 4, 3 and 2). The mass growth rate of all the grown crystals was investigated. X-ray powder diffraction measurement confirmed the emergence of the orfhorhombic phase of MgS04.7H20 and all patterns are agreed very well with the (JCPDS) file No. (36-0419). In the case of Ni-doped (MgSO4.7H20) crystals, growth rate increased with dopant concentrations especially at (1 %mole) and the size of the largest crystal was found to be (41.2013.3411.23) mm3 at l%Ni concentration and the parameters of the largest crystal were (a=11.861A, b=11.981A, c=6.852A). The colour of dopant crystals changed from transparent, colourless to greenish. The size of the largest crystals of (MgS04.7H20) that grow in an acidic medium was found to be (62.215.386.19) mm3 at pH =5, and the parameters of the largest crystal were (a=T1.87lA, b=l 1.993 A, c=6.855 A). All the grown crystals are well-faced, optically transparent, free defect, and good quality. The optical properties were studied by using UV-Vis analysis; all crystals have shown good absorption in the infrared and visible area of the spectrum. The characteristic peaks of Mg- O, OH, HOH and SO bond stretching or bending vibrations was revealed by FTIR spectroscopy.
机译：具有相当大的尺寸的单晶通过从水溶液中自然蒸发方法被成功地生长。纯（MgS04.7H20），掺杂有镍（MGL-yNiyS04.7H20其中y = 0，0.5,1,3和5％摩尔）和与改变溶液（酸性介质的pH，其中= 7,5，4， 3和2）。所有生长的晶体的质量增长率的影响。 X射线粉末衍射测定确认MgS04.7H20的orfhorhombic相的出现和所有图案都与（JCPDS）文件号（36-0419）同意得很好。在镍掺杂的情况下（MgSO4.7H20）晶体，生长速率随掺杂剂浓度特别是在（1％摩尔）和最大晶体的尺寸增加被认为是（41.2013.3411.23）立方毫米在升％的Ni浓度和最大晶体的参数是（a = 11.861A，b = 11.981A，C = 6.852A）。掺杂剂的晶体从透明变化的颜色，无色到绿色。在酸性培养基中生长的最大晶体（MgS04.7H20）的尺寸被发现是在pH = 5（62.215.386.19）3时，将与最大晶体的参数是（a = T1.87lA，B =升1.993 A，C = 6.855 A）。所有生长的晶体是公面对，光学透明的，无缺陷，和质量好。的光学特性，通过使用UV-Vis分析研究;所有晶体在光谱的红外和可视区域已显示出良好的吸收。的Mg的O，OH，HOH和SO键的伸缩或弯曲振动的特征峰由FTIR光谱显示。

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