Journal
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
Volume 9, Issue 3, Pages 5313-5325Publisher
ELSEVIER
DOI: 10.1016/j.jmrt.2020.03.057
Keywords
Nickel ferrite; Dysprosium; Magnetic properties; Nanomaterials; Spinel structure
Funding
- Higher Education Commission of Pakistan [6276/Punjab/NRPU/RD/HEC/2019]
- KSU [RSP-2019/49]
- American University in Cairo (AUC) through STRC mini-grant
- American University in Cairo (AUC) [FY19-FY20-FY21-RG(1-19)-2018-Oct-01-17-53-22]
Ask authors/readers for more resources
In this work, nanocrystalline NiDyxFe2-xO4 ferrites (0.0 <= x <= 0.1) were synthesized via co-precipitation route. The impact of Dy+3 substitution on the various properties has been investigated. Structural, electrical, spectral and magnetic parameters were measured by XRD (X-ray diffraction), I-V (current-voltage), FTIR (Fourier transform infrared spectroscopy) and VSM (vibrating sample magnetometer) respectively. Morphological analysis was done by FE-SEM (Field emission scanning electron microscope). The formation of a single-phase FCC cubic spinel structure was confirmed by XRD patterns. With the help of XRD data, bond lengths and ionic radii were also calculated. FTIR spectra showed the formation of two typical frequency bands (v(1) and v(2) ) which represent metal-oxygen (M-O) vibrations at octahedral (B) and tetrahedral (A) sites. EDX spectrographs confirmed elemental comosition. The M-H curves demonstrated a decrease in saturation magnetization (Ms) and Bohr magneton (n(B)). The coercivity (H-c ) showed a non-linear behaviour while anisotropy constant first increased and then decreased with Dy-substitution. NiDy0.025Fe1.975O4 showed maximum coercivity (102.06 Oe). (C) 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available