The Major and Minor Relaxations in Polymeric Ni-Zn-Cu-Co Complex Nanocomposite Systems

High Temperature Materials and Processes

Köseoğlu Y.¹  Akbulut S.²  şentürk E.³ 

[1] Department of Physics, Fatih University, Istanbul, Turkey;Department of Physics, Gebze Institute of Technology, Kocaeli, Turkey;Department of Physics, Sakarya University, Sakarya, Turkey;

关键词: ferrite;    dielectric constant;    dielectric relaxation;    nanocomposite;    78.20.ci;   

DOI  :  10.1515/htmp-2014-0006

来源: DOAJ

【 摘 要 】

Nanocrystalline polymeric complex (Ni0.5Zn0.4Cu0.1) ferrite substituted cobalt (Co) ferrite system has been synthesized by chemical co precipitation method. The dielectric properties of polymeric spinel ferrite system (Ni0.5Zn0.4Cu0.1Fe2O4)x (CoFe2O4)1–x have been investigated. Some of the dielectric parameters such as dielectric permittivity ε′ and loss tangent (tan δ) were studied as a function of frequency in the range 1 Hz–1 MHz and of temperature in the range 230–410 K. Excessive dependency of dielectric properties on frequency and temperature with the presence of two relaxation mechanisms, which are called as major and minor, have been observed. From Argand diagram analysis α and Δε values for these two kinds of relaxation curves have been determined for all the samples in the measured temperatures. The reported dielectric properties are thought to be meaningful for future applications.

【 授权许可】

Unknown