Effect of Mn and Ni codoping on ion dynamics of nanocrystalline cobalt ferrite: A structure property correlation study

被引：34

作者：

Chakrabarty, S. ^{[1
]}

Dutta, A. ^{[1
]}

Pal, M. ^{[2
]}

机构：

[1] Univ Burdwan, Dept Phys, Burdwan 713104, W Bengal, India

[2] CSIR Cent Glass & Ceram Res Inst, Kolkata 700032, W Bengal, India

来源：

ELECTROCHIMICA ACTA | 2015年 / 184卷

关键词：

Nanostructured materials; TEM; Rietveld analysis; Microstructure; Impedance spectroscopy; DIELECTRIC-PROPERTIES; NANOPARTICLES; CONDUCTIVITY; DEPENDENCE;

D O I：

10.1016/j.electacta.2015.10.027

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Effect of Mn and Ni codoping on structure, optical and electrical properties of cobalt ferrite nanoparticles prepared by coprecipitation route have been investigated in detail. DSC-TGA, XRD and HRTEM studies have been explored to confirm the phase purity and structure. Most possible cation distribution as estimated by Rietveld analysis suggests the formation of mixed spinel ferrite phase by the migration of Co2+ ions from B site to A site and hence Fe3+ ions from A site to B site in different amounts due to the doping of Mn and Ni ions. UV-vis study reveals a red shift for Mn and Mn-Ni co-doped samples while a blue shift was observed in case of Ni doping. Conductivity spectra follows the double power law and the modulus spectroscopy study indicates the coexistence of two incomplete relaxation processes in the system that arises due to the co-contribution from both grain and grain boundary which were thoroughly confirmed by complex impedance analysis. Improvement in the dielectric properties in the materials due to doping could be beneficial for device applications. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：70 / 79

页数：10

共 51 条

[11] JUMP RELAXATION IN SOLID ELECTROLYTES
FUNKE, K
[J]. PROGRESS IN SOLID STATE CHEMISTRY, 1993, 22 (02) : 111 - 195
[12] Goldman A., 2006, MODERN FERRITE TECHN, P93
[13] Structural, magnetic and electrical properties of cobalt ferrites prepared by the sol-gel route
Gul, I. H.
Maqsood, A.
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 465 (1-2) : 227 - 231
[14] Synthesis and characterization of nickel substituted cobalt ferrite nanoparticles by sol-gel auto-combustion method
Hankare, P. P.
Sanadi, K. R.
Garadkar, K. M.
Patil, D. R.
Mulla, I. S.
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2013, 553 : 383 - 388
[15] HUDSON AS, 1968, MARCONI REV, V31, P43
[16] UNIVERSAL DIELECTRIC RESPONSE
JONSCHER, AK
[J]. NATURE, 1977, 267 (5613) : 673 - 679
[17] Magnetic and structural properties of nano sized Dy-doped cobalt ferrite synthesized by co-precipitation
Karimi, Z.
Mohammadifar, Y.
Shokrollahi, H.
Asl, Sh. Khameneh
Yousefi, Gh.
Karimi, L.
[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2014, 361 : 150 - 156
[18] Effect of calcination temperature on the structural and electrical properties of cobalt ferrite synthesized by combustion method
Khandekar, M. S.
Kambale, R. C.
Patil, J. Y.
Kolekar, Y. D.
Suryavanshi, S. S.
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 (05) : 1861 - 1865
[19] Grain and grain boundary effects on the frequency and temperature dependent dielectric properties of cobalt ferrite-hafnium composites
Kolekar, Y. D.
Sanchez, L.
Rubio, E. J.
Ramana, C. V.
[J]. SOLID STATE COMMUNICATIONS, 2014, 184 : 34 - 39
[20] Low temperature hydrothermal synthesis and characterization of Mn doped cobalt ferrite nanoparticles
Koseoglu, Yuksel
Alan, Furkan
Tan, Muhammed
Yilgin, Resul
Ozturk, Mustafa
[J]. CERAMICS INTERNATIONAL, 2012, 38 (05) : 3625 - 3634

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