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- Title
Structural, Raman, Photo luminance, morphological, and magnetic properties of Sr-Ba-Cu–Zn W-type hexaferrites.
- Authors
Tahir, Wasim; Khan, Muhammad Azhar; Rasool, Raqiqa Tur; Gulbadan, Shagufta; Majeed, Abdul; Nasar, Gulfam
- Abstract
Cu-substituted W-type hexagonal ferrites with novel composition Sr0.5Ba0.5Co1.2CuxZn0.8–xFe16O27 (x = 0.0, 0.2, 0.4, 0.6, 0.8) have been explored for structural, spectral, dielectric, and magnetic characteristics. W-type hexaferrites (WHFs) have acquired remarkable attention because of their technological importance associated with their unique dielectric and magnetic behavior. X-ray diffraction analysis confirmed the single-phase synthesis of hexaferrites with space group P63/mmc. Photoluminescence analysis showed emission in the visible (red) region of the electromagnetic spectrum and, thus, anticipated the possible use of materials in optoelectronic devices. The band gap energy was found to be 1.879 eV for all materials. Fourier transform infrared spectroscopy (FTIR) results revealed the presence of octahedral and tetrahedral sites in the structure. Scanning electron microscopic (SEM) micrographs revealed the grain size in 0.30–0.70 μm and showed a decrease in porosity with copper substitution. Ten active Raman phonon modes were predicted in the range 0–900 cm−1 in all materials and were characteristic of W-type hexaferrites on the basis of symmetry and assigned polyhedra. The functional use of synthesized materials in important inductive components like multilayer chip inductors was prophesied through room-temperature dielectric investigations in the frequency range of 1–6 GHz. Room-temperature magnetic studies were accomplished by vibrating the sample magnetometer revealing high Ms (68–76 emu/g), Mr (32–35 emu/g), and Hc (1114–1503 Oe) values in all materials. Magnetic measurements exhibited that materials were magnetically hard with single-domain character and suitable for self-biased microwave devices.
- Publication
Journal of Materials Science: Materials in Electronics, 2023, Vol 34, Issue 26, p1
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-023-11192-1