TY - JOUR
T1 - A comparative study of the magnetic and microwave properties of Al3+ and In3+ substituted Mg-Mn ferrites
AU - Tsay, Chien Yie
AU - Liang, Shan Chien
AU - Lei, Chien Ming
AU - Chang, Chung Chieh
N1 - Funding Information:
This study received financial support from the Ministry of Science and Technology of Taiwan under grant number MOST 102-2221-E-035-017 and the Chung-Shan Institute of Science & Technology under grant number XD00141 P088PE . The authors gratefully acknowledge the Precision Instrument Support Center of Feng Chia University for providing the measurement facilities and Prof. Y.C. Chen of National Cheng Kung University for her kind supplying of microwave properties measurements.
Publisher Copyright:
© 2015 Elsevier Ltd and Techna Group S.r.l.
Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 2016/3/1
Y1 - 2016/3/1
N2 - The effect of substitution of diamagnetic Al3+ and In3+ ions for partial Fe3+ ions in a spinel lattice on the magnetic and microwave properties of magnesium-manganese (Mg-Mn) ferrites has been studied. Three kinds of Mg-Mn based ferrites with compositions of Mg0.9Mn0.1Fe2O4, Mg0.9Mn0.1Al0.1Fe1.9O4, and Mg0.9Mn0.1In0.1Fe1.9O4 were prepared by the solid-state reaction route. Each mixture of high-purity starting materials (oxide powders) in stoichiometric amounts was calcined at 1100 °C for 4 h, and the debinded green compacts were sintered at 1350 °C for 4 h. XRD examination confirmed that the sintered ferrite samples had a single-phase cubic spinel structure. The incorporation of Al3+ or In3+ ions in place of Fe3+ ions in Mg-Mn ferrites increased the average particle size, decreased the Curie temperature, and resulted in a broader resonance linewidth as compared to un-substituted Mg-Mn ferrites in the X-band. In this study, the In3+ substituted Mg-Mn ferrites exhibited the highest saturation magnetization of 35.7 emu/g, the lowest coercivity of 4.1 Oe, and the highest Q×f value of 1050 GHz at a frequency of 6.5 GHz.
AB - The effect of substitution of diamagnetic Al3+ and In3+ ions for partial Fe3+ ions in a spinel lattice on the magnetic and microwave properties of magnesium-manganese (Mg-Mn) ferrites has been studied. Three kinds of Mg-Mn based ferrites with compositions of Mg0.9Mn0.1Fe2O4, Mg0.9Mn0.1Al0.1Fe1.9O4, and Mg0.9Mn0.1In0.1Fe1.9O4 were prepared by the solid-state reaction route. Each mixture of high-purity starting materials (oxide powders) in stoichiometric amounts was calcined at 1100 °C for 4 h, and the debinded green compacts were sintered at 1350 °C for 4 h. XRD examination confirmed that the sintered ferrite samples had a single-phase cubic spinel structure. The incorporation of Al3+ or In3+ ions in place of Fe3+ ions in Mg-Mn ferrites increased the average particle size, decreased the Curie temperature, and resulted in a broader resonance linewidth as compared to un-substituted Mg-Mn ferrites in the X-band. In this study, the In3+ substituted Mg-Mn ferrites exhibited the highest saturation magnetization of 35.7 emu/g, the lowest coercivity of 4.1 Oe, and the highest Q×f value of 1050 GHz at a frequency of 6.5 GHz.
KW - A. Powders: solid state reaction
KW - C. Magnetic properties
KW - D. Ferrites
KW - D. Spinels
KW - E. Functional applications
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U2 - 10.1016/j.ceramint.2015.11.154
DO - 10.1016/j.ceramint.2015.11.154
M3 - Article
AN - SCOPUS:84955736263
SN - 0272-8842
VL - 42
SP - 4748
EP - 4753
JO - Ceramics International
JF - Ceramics International
IS - 4
ER -