Helen Merina Albert, SK. Fakruddin Babavali, Bonu Akkayya, D. Neelima Patnaik, Maddikera Kalyan Chakravarthi, V. Nagalakshmi, N. R. Rajagopalan
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引用次数: 0
摘要
通过逐渐蒸发的过程生长出掺杂锌（II）的脲- l -苹果酸晶体（Zn:ULM）。从x射线衍射（XRD）研究中发现，Zn:ULM结构具有单斜晶对称。紫外可见分析表明，Zn:ULM在紫外可见范围内具有令人难以置信的透明，带隙为4.95 eV。根据Kurtz和Perry的测量，Zn:ULM产生的次谐波是磷酸二氢钾（KDP）的2.25倍。采用热重法和差示扫描量热法（TG-DSC）评价了Zn:ULM的热稳定性。在100 Hz ~ 5 MHz范围内对Zn:ULM的介电参数进行了评估。琼舍尔的理论被用来解释电导率的基本机制。我们使用阻抗谱来更深入地了解导电过程。研究结果表明，Zn:ULM晶体适合光电应用。
Investigation of the Optical, Thermal, Dielectric, Electrical, and Impedance Features of Zinc-Doped Urea-L-Malic Crystals
Urea-L-malic acid crystals doped with zinc (II) (Zn:ULM) were grown through the process of gradual evaporation. From the X-ray diffraction (XRD) study it was found that the Zn:ULM structure relates to a monoclinic crystal symmetry. UV-visible analysis indicated that the Zn:ULM is incredibly transparent in the UV-visible range with a bandgap of 4.95 eV. According to Kurtz and Perry measurements, the Zn:ULM produced second harmonics 2.25 times that of the potassium dihydrogen phosphate (KDP) value. Thermogravimetric and differential scanning calorimetry (TG-DSC) methods were deployed to assess the thermal stability of Zn:ULM. The dielectric parameters of Zn:ULM were assessed within the 100 Hz to 5 MHz range. Jonscher’s theory was used to explain the mechanisms underlying electrical conductivity. We used impedance spectroscopy to gain more insight into the conductivity process. The findings show that the Zn:ULM crystals are appropriate for optoelectronic uses.
期刊介绍：
Presents the latest results from Russia’s leading researchers in condensed matter physics at the Russian Academy of Sciences and other prestigious institutions. Covers all areas of solid state physics including solid state optics, solid state acoustics, electronic and vibrational spectra, phase transitions, ferroelectricity, magnetism, and superconductivity. Also presents review papers on the most important problems in solid state physics.
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