文章基本信息

标题：Investigation of microstructural and magnetic properties of Ca 2+ doped strontium hexaferrite nanoparticles
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作者：Sachin Kumar Godara ; Mankamal Preet Kaur ; Varinder Kaur 等
期刊名称：Journal of King Saud University - Science
印刷版ISSN：1018-3647
出版年度：2022
卷号：34
期号：4
页码：1-8
DOI：10.1016/j.jksus.2022.101963
语种：English
出版社：Elsevier
摘要：AbstractThe effect of Ca2+ions doping on the structure, magnetic properties, and surface morphology of Sr1-xCaxFe12O19(x = 0.0 to 0.5 with step size 0.1) hexaferrite nanoparticles synthesized using the sol–gel auto-combustion technique was investigated in the current study. The phase purity of synthesized samples is confirmed by XRD data plots up to x = 0.2, after which α-Fe2O3was observed as a secondary phase in all concentrations. The micrographs from FESEM show that with the increase in the concentration of Ca2+dopant, the average grain size increases from ≈125 nm to ≈240 nm. The intensity of secondary phase Raman peaks increases with increasing dopant ion concentration beyond x = 0.2. The coercivity value varies between 5292 and 5828 Oe as the Ca2+dopant increases. A maximum (72.63 emu/g) value of saturation magnetization (Ms) have been obtained in samples at x = 0.2. Such substances can be utilized for making permanent magnets applications.
关键词：KeywordsenSol-gel processesStrontium hexaferriteDielectric propertiesMagnetic propertiesHard magnets