Role of composition and grain size in controlling the structure sensitive magnetic properties of Sm3+ substituted nanocrystalline Co-Zn ferrites
来源期刊：Journal of Rare Earths2020年第10期
论文作者：Anil B.Mugutkar Vijaykumar V.Jadhav Rajaram S.Mane Sagar E.Shirsath Santosh S.Jadhav
文章页码：1069 - 1075
摘 要：The nanocrystalline samarium substituted Co-Zn ferrites with chemical formula Co0.7Zn0.3SmyFe2-yO4（where y=0,0.01,0.02,0.03,0.04） were synthesized by sol-gel autocombustion route.The analysis of Xray diffractograms（XRD） reveals the formation of cubic spinel structure.The planes indexed from XRD analyses were confirmed in the selected area electron diffraction（SAED） image of the sample.Nanocrystalline nature of the particles in the ferrite samples was confirmed by TEM.The morphology was analyzed by scanning electron microscopy（SEM）.Magnetic measurements show an increase in the magnetization for x ≤0.03.The decrease in magnetization due to spin canting is observed for x=0.04.The coercivity depends on Sm3+doping concentration,grain size and saturation magnetization.The complex permeability of the ferrites was analyzed as the function of frequency and Sm3+composition（y）.The real part of complex permeability varies linearly with the grain size.
Anil B.Mugutkar1,2，Vijaykumar V.Jadhav4,5，Rajaram S.Mane6，Sagar E.Shirsath8，Santosh S.Jadhav2,3
4. Guangdong Technion,Israel Institute of Technology6. School of Physical Sciences,Swami Ramanand Teerth Marathwada University8. School of Materials Science and Engineering,University of New South Wales
摘 要：The nanocrystalline samarium substituted Co-Zn ferrites with chemical formula Co0.7Zn0.3SmyFe2-yO4（where y=0,0.01,0.02,0.03,0.04） were synthesized by sol-gel autocombustion route.The analysis of Xray diffractograms（XRD） reveals the formation of cubic spinel structure.The planes indexed from XRD analyses were confirmed in the selected area electron diffraction（SAED） image of the sample.Nanocrystalline nature of the particles in the ferrite samples was confirmed by TEM.The morphology was analyzed by scanning electron microscopy（SEM）.Magnetic measurements show an increase in the magnetization for x ≤0.03.The decrease in magnetization due to spin canting is observed for x=0.04.The coercivity depends on Sm3+doping concentration,grain size and saturation magnetization.The complex permeability of the ferrites was analyzed as the function of frequency and Sm3+composition（y）.The real part of complex permeability varies linearly with the grain size.
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