Role of composition and grain size in controlling the structure sensitive magnetic properties of Sm substituted nanocrystalline Co-Zn ferrites  

作　　者：Anil B.Mugutkar Shyam K.Gore Umakant B.Tumberphale Vijaykumar V.Jadhav Rajaram S.Mane Sunil M.Patange Sagar E.Shirsath Santosh S.Jadhav 

机构地区：[1]Bahirji Smarak Mahavidyalaya,Basmath,431512,Maharashtra,India [2]Microwave Research Laboratory,N.E.S.Science College,Nanded,431601,Maharashtra,India [3]Dnyanopasak Shikshan Mandal's Arts,Commerce and Science College,Jintur,431509,Maharashtra,India [4]Guangdong Technion,Israel Institute of Technology,Shantou 515006,China [5]Department of Physics,Shivaji Mahavidyalaya,Udgir-413517,Maharashtra,India [6]School of Physical Sciences,Swami Ramanand Teerth Marathwada University,Nanded,431606,Maharashtra,India [7]Shri Krishna Mahavidyalaya,Gunjoti,413613,Maharashtra,India [8]School of Materials Science and Engineering,University of New South Wales,Sydney,2052,NSW,Australia

出　　处：《Journal of Rare Earths》2020年第10期1069-1075,I0002,共8页稀土学报（英文版）

基　　金：Project supported by the Minor Research Project sanctioned by the supported by the Dnyanopasak Shikshan Mandal’s Arts,Commerce and Science College,Jintur,431509,Maharashtra,India (47-766/13)。

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.

关 键 词：Nanocrystalline ferrites Rietveld refinement HRTEM MAGNETIZATION COERCIVITY PERMEABILITY 

分 类 号：O469[理学—凝聚态物理]