材料科学
矫顽力
磁铁
分析化学(期刊)
锶
掺杂剂
拉曼光谱
结块
兴奋剂
粒径
饱和(图论)
相(物质)
核磁共振
凝聚态物理
复合材料
光学
物理化学
化学
光电子学
色谱法
物理
数学
有机化学
量子力学
组合数学
作者
Sachin Kumar Godara,Nomita,Varinder Kaur,A. K. Srivastava,Deepak Basandrai,Jahangeer Ahmed,Jibrim Mohammed,Mandeep Singh,Paramjit Kaur,Amir Mehtab,Tokeer Ahmad,Rahul Kumar Dhaka,Pradip K. Maji,Anil K. Sood
标识
DOI:10.1016/j.jmmm.2022.169626
摘要
The purpose of the study is to assess the influence of Zn2+-Zr4+ dopant upon morphological and magnetic aspects of SrM (M−type Strontium hexaferrites). In the current investigation, a series of SrZnxZrxFe12-2xO19 (x = 0.00–0.15) were manufactured by employing the sol–gel auto-combustion technique (SGACT). The formation of the pure phase has been revealed from XRD data of strontium hexaferrites without the existence of an intermediate phase for instance α–Fe2O3, SrFe2O4 and SrCO3. The lattice parameter ‘c’ increases from 23.0601 to 23.0703 Å and cell volume increases to 692. 68 Å3 from 691.38 Å3 with an increment in Zn2+-Zr4+ content. With substitution, FESEM images reveal an increase in the particle as well as agglomerates size. DLS data also show an increase in size of particle from x = 0.00 (≈130 nm) to x = 0.15 (≈ 500 nm). Raman spectra reveal crystals straining with an increment in Zn2+-Zr4+ content. The coercivity values (Hc) range from 5164Oe (x = 0.00) to 6210Oe (x = 0.15) as disseminated by magnetic measurements. The corresponding values of saturation magnetization (Ms) fall between 71.22 and 82.16 emu/g. The augmentation in magnetic characteristics of SrM upon doping with Zn2+-Zr4+ could be vital for permanent magnet applications.
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