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首页> 外文期刊>Physica, B. Condensed Matter >Growth of 4-(dimethylamino) benzaldehyde doped triglycine sulphate single crystals and its characterization
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Growth of 4-(dimethylamino) benzaldehyde doped triglycine sulphate single crystals and its characterization

机译：掺杂4-（二甲氨基）苯甲醛的硫酸三甘氨酸单晶的生长及其表征

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Single crystals of triglycine sulphate (TGS) doped with 1 mol% of 4-(dimethylamino) benzaldehyde (DB)have been grown from aqueous solution at ambient temperature by slow evaporation technique.The effect of dopant on the crystal growth and dielectric, pyroelectric and mechanical propertiesof TGS crystal have been investigated. X-ray powder diffraction pattern for pure and doped TGS wascollected to determine the lattice parameters. FTIR spectra were employed to confirm the presence of4-(dimethylamino) benzaldehyde in TGS crystal, qualitatively. The dielectric permittivity has beenstudied as a function of temperature by cooling the sample at a rate of 1℃/min. An increase in the Curietemperature T_c = 51℃(for pure TGS,T_c= 48.5℃) and decrease in maximum permittivity has beenobserved for doped TGS when compared to pure TGS crystal. Pyroelectric studies on doped TGS werecarried out to determine pyroelectric coefficient. The Vickers's hardness of the doped TGS crystals along(0 1 0) face is higher than that of pure TGS crystal for the same face. Domain patterns on b-cut plateswere observed using scanning electron microscope. The low dielectric constant, higher pyroelectriccoefficient and higher value of hardness suggest that doped TGS crystals could be a potential materialfor IR detectors.
机译：在室温下通过慢速蒸发技术从水溶液中生长了掺杂有1 mol％4-（二甲基氨基）苯甲醛（DB）的硫酸三甘氨酸（TGS）单晶，掺杂剂对晶体生长，介电，热电和电学的影响。研究了TGS晶体的力学性能。收集纯的和掺杂的TGS的X射线粉末衍射图以确定晶格参数。 FTIR光谱用于定性确定TGS晶体中4-（二甲基氨基）苯甲醛的存在。通过以1℃/ min的速度冷却样品，研究了介电常数与温度的关系。与纯TGS晶体相比，掺杂TGS的居里温度T_c = 51℃（对于纯TGS，T_c = 48.5℃）增加，并且最大介电常数降低。对掺杂的TGS进行热电学研究以确定热电系数。沿（0 1 0）面掺杂的TGS晶体的维氏硬度高于同一面的纯TGS晶体的维氏硬度。使用扫描电子显微镜观察b切割板上的畴图案。低介电常数，较高的热电系数和较高的硬度值表明，掺杂的TGS晶体可能是红外探测器的潜在材料。

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