{"title":"A comparative study of Nd and Sm doping on the structural, magnetic, and electromagnetic traits of Mg-Zn spinel nanoferrites","authors":"Anand Sharma, Rohit Jasrotia, Nisha Kumari, Jahangeer Ahmed, Saad M. Alshehri, Rajesh Kumar","doi":"10.1007/s10971-024-06559-7","DOIUrl":null,"url":null,"abstract":"<div><p>We present here the synthesis of Mg<sub>0.5</sub>Zn<sub>0.5</sub>R<sub><i>x</i></sub>Fe<sub>2-<i>x</i></sub>O<sub>4</sub> (<i>x</i> = 0.00, 0.05; R = Sm, Nd) spinel ferrite using the sol-gel auto-combustion (SGAC) scheme for examination of physical, electromagnetic, magnetic, and optical traits of Sm and Nd substituted Mg-Zn nanoferrites. The room temperature XRD patterns indicates cubic phase formation with the Fd3m space group. The size of crystallites goes from 29 to 19 nm by doping with Nd but, with the Sm doping, it decreases to 18 nm. FESEM pictures reveal the production of irregular grains with agglomerated morphology in all the undoped and doped nanoferrites. Based on a Fourier transform infrared study, it was shown that there were two distinct peaks at 525.55–529.41 cm<sup>−1</sup> and 416.75–418.09 cm<sup>−1</sup> representing the metal-oxygen bonds at octa and tetrahedral site locations, respectively. The M-H plots demonstrate a significant decline in the saturation magnetization with the neodymium and samarium substitution from 23.01 to 21.71 emu/g and to 11.63 emu/g, respectively. Low values of coercivity (10.03–58.82 Oe), retentivity (0.81–3.12 emu/g) and squareness ratio (0.037–0.268) confirms the superparamagnetic nature of prepared doped and undoped Mg-Zn nanoferrites and also suggests their potential use in solenoids and transformers applications. The electromagnetic examination of these Mg-Zn nanoferrites were reported within 1–10 GHz range, showing the high real permeability and permittivity with lower magnetic and dielectric losses. With the excellent electromagnetic characteristics, the prepared nanoferrites can be used as the substrate materials for antenna miniaturization application.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"112 3","pages":"715 - 727"},"PeriodicalIF":2.3000,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Sol-Gel Science and Technology","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10971-024-06559-7","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0
Abstract
We present here the synthesis of Mg0.5Zn0.5RxFe2-xO4 (x = 0.00, 0.05; R = Sm, Nd) spinel ferrite using the sol-gel auto-combustion (SGAC) scheme for examination of physical, electromagnetic, magnetic, and optical traits of Sm and Nd substituted Mg-Zn nanoferrites. The room temperature XRD patterns indicates cubic phase formation with the Fd3m space group. The size of crystallites goes from 29 to 19 nm by doping with Nd but, with the Sm doping, it decreases to 18 nm. FESEM pictures reveal the production of irregular grains with agglomerated morphology in all the undoped and doped nanoferrites. Based on a Fourier transform infrared study, it was shown that there were two distinct peaks at 525.55–529.41 cm−1 and 416.75–418.09 cm−1 representing the metal-oxygen bonds at octa and tetrahedral site locations, respectively. The M-H plots demonstrate a significant decline in the saturation magnetization with the neodymium and samarium substitution from 23.01 to 21.71 emu/g and to 11.63 emu/g, respectively. Low values of coercivity (10.03–58.82 Oe), retentivity (0.81–3.12 emu/g) and squareness ratio (0.037–0.268) confirms the superparamagnetic nature of prepared doped and undoped Mg-Zn nanoferrites and also suggests their potential use in solenoids and transformers applications. The electromagnetic examination of these Mg-Zn nanoferrites were reported within 1–10 GHz range, showing the high real permeability and permittivity with lower magnetic and dielectric losses. With the excellent electromagnetic characteristics, the prepared nanoferrites can be used as the substrate materials for antenna miniaturization application.
期刊介绍：
The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.
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