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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
engineering
Influence of Cd substitution on structural, electrical and magnetic properties of M-type barium hexaferrites co-precipitated nanomaterials
Journal of Alloys and Compounds, Volume 584, Year 2014
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Description
Nanocrystalline M-type hexagonal ferrites with the nominal chemical composition Ba0.5Co0.5-xCd xFe12O19 (where x = 0-0.5) have been synthesized by the co-precipitation method and sintered at high annealing temperature (1250 C) to study their structural, electrical and magnetic properties. The aim of the present work is to increase the DC electrical resistivity and coercivity of these M-type hexaferrites nanomaterials by the substitution of cadmium (Cd2+) ions at Co2+ site. The analysis of X-ray diffraction (XRD) patterns indicates single M-type hexaferrite phase. The parameters such as lattice constants (a and c), cell volume (V), X-xay density (Dx), bulk density (Db), crystallite size (D) and percentage porosity (%P) were calculated from XRD data. The crystallite size is found in the range of 26-47 nm and this size is small enough to obtain a suitable signal-to-noise ratio for application in the magnetic recording media. The room temperature DC electrical resistivity increases from 2.31 × 109 Ω cm to 6.42 × 109 Ω cm with the increased Cd contents. The magnetic properties such as saturation magnetization (Ms), coercivity (Hc), remanence (Mr) and squareness ratio (Mr/Ms) were calculated from hysteresis loops. The coercivity increases from 155 Oe to 1852 Oe while the saturation magnetization decreases from 33.5 to 9.2 emu g-1 as the concentration of Cd increases. The electrical and magnetic properties such as DC electrical resistivity, coercivity and remanence suggested the synthesized materials suitable candidate for high frequency applications and recording media. © 2013 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Din, Muhamad Faiz Md
Unknown Affiliation
Ahmad, Ishtiaq
Unknown Affiliation
Ahmad, Mukhtar
Unknown Affiliation
Farid, M. T.
Unknown Affiliation
Asif Iqbal, Muhammad
Unknown Affiliation
Murtaza, Ghulam
Unknown Affiliation
Niaz Akhtar, Majid Niaz
Unknown Affiliation
Shakir, Imran
Unknown Affiliation
Warsi, Muhammad Farooq
Unknown Affiliation
Khan, Muhammad Azhar
Unknown Affiliation
Statistics
Citations: 48
Authors: 10
Affiliations: 7
Identifiers
Doi:
10.1016/j.jallcom.2013.09.043
ISSN:
09258388
Study Approach
Qualitative