Al doped spinel and garnet nanostructured ferrites for microwave frequency C and X- band applications. (December 2018)

• Record Type: Journal Article
• Authors: Akhtar, Majid Niaz; Saleem, Muhammad; Khan, Muhammad Azhar
• Is Part Of: Journal of physics and chemistry of solids. Volume 123(2018)
• Page Start: 260
• Page End: 265
• Publication Date: 2018-12
• Subjects: Al doped Ni-Zn spinel ferrite -- Al doped YIG ferrite -- X-ray diffraction (XRD) -- Vibrating -- Sample magnetometer -- Scanning electron microscope (SEM); Solids -- Periodicals; Solides -- Périodiques; Solids; Periodicals; 530.41
• DOI: 10.1016/j.jpcs.2018.08.007
• Languages: English
• ISSNs: 0022-3697

Abstract

Abstract: Spinel and garnet nanostructured ferrites have been used for various potential applications. Single phase spinel and garnet nanoferrites have been used for different applications in many fields. Ni-Zn (Ni0.5 Zn0.3 Al0.2 Fe2 O4 ) ferrite with spinel structure and YAIG (Y2.8 Al0.2 Fe5 O12 ) ferrite with garnet structure were synthesized using sol-gel technique. The structural, morphological and magnetic studies were done for spinel and garnet nanoferrites. X-ray diffraction (XRD), scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM) were used to investigate the structural, morphological and magnetic properties of the spinel and garnet nanoferrites respectively. Single phase spinel and garnet nanocrystalline ferrites were confirmed from XRD analysis. Circular and cubic shape morphology was observed for spinel and garnet nanoferrites respectively. Static magnetic characteristics of the Al doped spinel and garnet nanoferrites (saturation, remanence, coercivity and magnetic squareness) were measured from the hysteresis loops. Dynamic magnetic properties such as initial permeability, Q factor and magnetic losses of the Al doped spinel and garnet nanoferrites were also evaluated from magnetic measurements. Spinel and garnet nanoferrites prepared at low temperature may have potential in industrial and technological applications e.g. transformers, switching, cores, filters, sea bed logging, MLCI's, microwave absorption bio medical applications and microwave frequency (C and X) band applications. Graphical abstract: Image 1 Highlights: Ni0.5 Zn0.3 Al0.2 Fe2 O4 and Y2.8 Al0.2 Fe5 O12 ferrites were synthesized using sol-gel technique. Circular and cubic shape morphology was observed for spinel and garnet nanoferrites respectively. Better magnetic characteristics are achieved for Al doped garnet nanoferrites. These are suitable for MLCI's and microwave frequency (C and X) band applications.