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Unveiling the correlation between the structure and property of the amorphous state of hydrated nickel sulfate (NiSO4·6H2O) induced by acoustic shock waves – An X-ray diffraction, thermal calorimetric and dielectric spectroscopic approach
Materials Science and Engineering: B ( IF 3.9 ) Pub Date : 2024-01-24 , DOI: 10.1016/j.mseb.2024.117205
Sivakumar Aswathappa , Lidong Dai , Sahaya Jude Dhas Sathiyadhas , Martin Britto Dhas Sathiyadhas Amalapushpam , Vasanthi Thangavel , Vellapalayam Nalagounder Vijayakumar , Raju Suresh Kumar , Abdulrahman I. Almansour

In the present work, we report the phase transition from crystalline to amorphous (topological disorder) of NiSO4·6H2O (NSH) for which impedance spectroscopic and differential scanning calorimetric (DSC) techniques have been utilized to understand the changes in a better way thereby the electrical and thermal properties could be identified. According to the observed dielectric properties, the crystalline NSH has a low dielectric constant and low electrical conductivity whereas both of these values are high for the obtained amorphous state. DSC thermograms provide crystal clear details for the cause of the witnessed changes wherein the melting point region changes for both the crystalline and the amorphous samples. The values of magnetization for crystalline and amorphous samples are found to be 0.7339 and 2.070 emu/g, respectively. Because of the effective switchability between crystalline and amorphous states, the NSH crystal is suggested for the applications of sensors and dielectric switches.



中文翻译:

揭示声冲击波诱导的非晶态水合硫酸镍 (NiSO4·6H2O) 的结构和性质之间的相关性 – X 射线衍射、热量热和介电光谱方法

在目前的工作中,我们报道了 NiSO 4 ·6H 2 O (NSH) 从晶态到非晶态(拓扑无序)的相变,利用阻抗谱和差示扫描量热 DSC)技术来更好地理解这一变化。从而可以识别电学和热学性质。根据观察到的介电特性,晶体 NSH 具有低介电常数和低电导率,而对于获得的非晶态来说,这两个值都很高。DSC 热分析图提供了所见证变化的原因的清晰细节,其中结晶和非晶样品的熔点区域都发生变化。晶体和非晶样品的磁化强度值分别为 0.7339 和 2.070 emu/g。由于晶态和非晶态之间的有效可切换性,NSH 晶体被建议用于传感器和介电开关的应用。

更新日期:2024-01-25
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