Structural and magnetic study of dysprosium substituted cobalt ferrite nanoparticles

被引：65

作者：

Kumar, Hemaunt ^{[1
]}

Srivastava, R. C. ^{[1
]}

Singh, Jitendra Pal ^{[2
]}

Negi, P. ^{[1
]}

Agrawal, H. M. ^{[2
]}

Das, D. ^{[3
]}

Chae, Keun Hwa ^{[2
]}

机构：

[1] Govind Ballabh Pant Univ Agr & Technol, Dept Phys, Pantnagar 263145, Uttarakhand, India

[2] Korea Inst Sci & Technol, Adv Anal Ctr, Seoul 02792, South Korea

[3] UGC DAE CSR Kolkata Ctr, Kolkata 700098, India

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2016年 / 401卷

关键词：

Nanoparticles; Dy3+ doping; Raman Spectra; VSM and Mossbauer; CATION DISTRIBUTION; SIZE;

D O I：

10.1016/j.jmmm.2015.09.077

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present work investigates the magnetic behavior of Dy3+ substituted cobalt ferrite nanoparticles. X-ray diffraction studies reveal presence of cubic spinel phases in these nanoparticles. Raman spectra of these nanoparticles show change in intensity of Raman bands, which reflects cation redistribution in cubic spinel lattice. Saturation magnetization and coercivity decrease with increase of Dy3+ concentration in these nanoparticles. Room temperature Mossbauer measurements show the cation redistribution in these nanoparticles and corroborates the results obtained from Raman Spectroscopic measurements. Decrease in magnetization of Dy3+ substituted cobalt ferrite is attributed to the reduction in the magnetic interaction and cation redistribution. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：16 / 21

页数：6

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