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Studies of structural, dielectric and electrical characteristics of complex perovskite: Sr(Ni 1/3 Mn 1/3 W 1/3 )O 3
Indian Journal of Physics ( IF 1.6 ) Pub Date : 2020-07-03 , DOI: 10.1007/s12648-020-01789-1
Deeptimayee Khatua , Sujit Kumar Dehury , S. K. Parida , R. N. P. Choudhary , P. Ganga Raju Achary

A lead-free complex perovskite, strontium nickel tungsten manganite Sr(Ni1/3Mn1/3W1/3)O3(SNMWO), was synthesized following a cost-effective standard ceramic processing technology. The structure of the compound was found to be cubic. A detailed study of scanning electron micrograph and the energy-dispersive spectra of SNMWO provided the quality and composition of the material. The average crystallite size (Dhkl) of SNMWO was found to be about 22 nm, which was calculated using Scherrer relation. The analysis of the data of dielectric, impedance and electrical conduction for a wide range of frequency and temperature of SNMWO provides interesting characteristics for useful applications. The dielectric relaxation and electrical properties are related to the grains, grain boundaries and electrode characteristics of SNMOW. Such characteristics of the material help us to understand the correlation between conduction mechanism and microstructure of the material for electronic applications. The important electrical properties were evaluated from the simulation of the Nyquist plots with the help of an equivalent electrical circuit. The transport properties along with the ac-conductivity, modulus (electrical) of Sr (Ni1/3Mn1/3W1/3)O3, were also presented in the paper.



中文翻译:

复合钙钛矿Sr(Ni 1/3 Mn 1/3 W 1/3)O 3的结构,介电和电特性研究

遵循经济高效的标准陶瓷加工技术,合成了无铅复合钙钛矿,锶镍镍锰锰酸锶Sr(Ni 1/3 Mn 1/3 W 1/3)O 3(SNMWO)。发现该化合物的结构是立方的。扫描电子显微照片和SNMWO的能量色散光谱的详细研究提供了材料的质量和组成。平均微晶尺寸(D hkl使用Scherrer关系式计算出的SNMWO的)约为22nm。对SNMWO的各种频率和温度范围内的电介质,阻抗和电导率数据进行分析,为有用的应用提供了有趣的特性。介电弛豫和电性能与SNMOW的晶粒,晶界和电极特性有关。材料的这种特性有助于我们理解电子应用材料的导电机理与微观结构之间的关系。在等效电路的帮助下,通过对奈奎斯特图的仿真来评估重要的电性能。Sr(Ni 1/3 Mn的交流电导率和模量(电)本文还介绍了1/3 W 1/3)O 3

更新日期:2020-07-03
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