A study of frequency dependent electrical and dielectric properties of NiO nanoparticles

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• 作者：V. Usha^a ; S. Kalyanaraman^a ; ^{mayura_priya2003@yahoo.co.in" class="auth_mail" title="E-mail the corresponding author} ; R. Vettumperumal^a ; ^b ; R. Thangavel^c
• 关键词：NiO nanoparticles ; Electrical properties ; Dielectric properties
• 刊名：Physica B: Physics of Condensed Matter
• 出版年：2017
• 出版时间：1 January 2017
• 年：2017
• 卷：504
• 期：Complete
• 页码：63-68
• 全文大小：1155 K

文摘

Nickel oxide nanoparticles were synthesized using low cost sol-gel method. The structure of as prepared NiO nanoparticles has been confirmed from X-ray diffraction (XRD), scanning electron microscope with energy dispersive X-ray (SEM and EDX) spectroscopic analysis. The electrical and dielectric properties were characterized by complex impedance spectroscopy as a function of frequency at different temperatures. To study the dielectric behavior of the nanoparticles different plots like Nyquist plot, modulus plot and Bode plot were used. Also the frequency dependent ac conductivity is analyzed and the activation energy is calculated. The dielectric constant and dielectric loss as a function of frequency at various temperatures are also studied.