Dielectric relaxation, complex impedance and modulus spectroscopic studies of mix phase rod like cobalt sulfide nanoparticles

被引：288

作者：

Joshi, J. H. ^{[1
]}

Kanchan, D. K. ^{[2
]}

Joshi, M. J. ^{[1
]}

Jethva, H. O. ^{[1
]}

Parikh, K. D. ^{[3
]}

机构：

[1] Saurashtra Univ, Dept Phys, Rajkot 360005, Gujarat, India

[2] Maharaja Sayajirao Univ Baroda, Dept Phys, Fac Sci, Vadodara 390002, India

[3] Shri MP Shah Arts & Sci Coll, Dept Phys, Surendranagar 363001, India

来源：

MATERIALS RESEARCH BULLETIN | 2017年 / 93卷

关键词：

Chalcogenides; Chemical synthesis; Impedance Spectroscopy; Trasmission electron microscopy; Dielectric properties; HYDROTHERMAL SYNTHESIS; CONDUCTION MECHANISM; AC CONDUCTIVITY; NANOCRYSTALLINE; BEHAVIOR; CO3S4; CO9S8;

D O I：

10.1016/j.materresbull.2017.04.013

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Cobalt sulfide (CoS) nano-particles were synthesized using microwave assisted route. Powder XRD exhibited mixed phase of Co3S4 and CoS. The average crystallite size is found to be 58.28 nm from the Scherrer's formula and 54.41 nm from the Williamson and Hall (W-H) method. Rod like morphology is observed in nano-particles by HRTEM. The EDAX spectrum confirmed the presence of cobalt and sulphur. The impedance spectra were recorded in the range from 10 Hz to 10 MHz at various temperatures from 323 K to 373 K. The complex impedance spectra, i.e., Nyquist plots, were composed of two semicircles indicating the presence of grain and grain boundary contributions of nanoparticles. From the Jonscher's power law plots the Correlation Barrier Hopping (CBH) mechanism was found to prevailing for conduction in CoS nanoparticles. The electrical modulus spectroscopy suggested the temperature dependant relaxation process within CoS Nanoparticles. The results are discussed. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：63 / 73

页数：11

共 69 条

[1] Transport characteristics and colossal dielectric response of cadmium sulfide nanoparticles [J].

Ahmad, Mushtaq ;

Rafiq, M. A. ;

Hasan, M. M. .

JOURNAL OF APPLIED PHYSICS, 2013, 114 (13)

[2] Electrical conduction mechanism in ZnS nanoparticles [J].

Ali, Hassan ;

Karim, S. ;

Rafiq, M. A. ;

Maaz, K. ;

Rahman, Atta Ur ;

Nisar, A. ;

Ahmad, M. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2014, 612 :64-68

[3]

[Anonymous], PHY REV B

[4]

[Anonymous], INT J ENG INNOV TECH

[5]

[Anonymous], 2011, ADV MAT LETT, DOI [10.5185/amlett.2011.2228, DOI 10.5185/AMLETT.2011.2228]

[6] Rietveld refinement, microstructure, conductivity and impedance properties of Ba[Zr0.25Ti0.75]O3 ceramic [J].

Badapanda, T. ;

Senthil, V. ;

Rout, S. K. ;

Cavalcante, L. S. ;

Simoes, A. Z. ;

Sinha, T. P. ;

Panigrahi, S. ;

de Jesus, M. M. ;

Longo, E. ;

Varela, J. A. .

CURRENT APPLIED PHYSICS, 2011, 11 (06) :1282-1293

[7]

Barsoukov E, 2005, IMPEDANCE SPECTROSCOPY: THEORY, EXPERIMENT, AND APPLICATIONS, 2ND EDITION, pXII

[8]

Ben Bechir M, 2015, PHAS T

[9] Conductivity study and correlated barrier hopping (CBH) conduction mechanism in diphosphate compound [J].

Ben Taher, Y. ;

Oueslati, A. ;

Maaloul, N. K. ;

Khirouni, K. ;

Gargouri, M. .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2015, 120 (04) :1537-1543

[10] Impedance Spectroscopic Characterization of Sm and Ho Doped Ni Ferrites [J].

Bharathi, K. Kamala ;

Markandeyulu, G. ;

Ramana, C. V. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2011, 158 (03) :G71-G78

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