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Effect on Magnetic, morphological and structural properties of Zn 2+ -Zr 4+ substituted SrM for permanent magnet based appliances

Journal of Magnetism and Magnetic Materials, ISSN: 0304-8853, Vol: 560, Page: 169626
2022
  • 18
    Citations
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  • 13
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  • 37
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  • Citations
    18
    • Citation Indexes
      18
  • Captures
    13
  • Social Media
    37
    • Shares, Likes & Comments
      37
      • Facebook
        37

Article Description

The purpose of the study is to assess the influence of Zn 2+ -Zr 4+ dopant upon morphological and magnetic aspects of SrM (M−type Strontium hexaferrites). In the current investigation, a series of SrZn x Zr x Fe 12-2x O 19 (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–Fe 2 O 3, SrFe 2 O 4 and SrCO 3. 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 Zn 2+ -Zr 4+ 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 Zn 2+ -Zr 4+ content. The coercivity values (H c ) range from 5164Oe (x = 0.00) to 6210Oe (x = 0.15) as disseminated by magnetic measurements. The corresponding values of saturation magnetization (M s ) fall between 71.22 and 82.16 emu/g. The augmentation in magnetic characteristics of SrM upon doping with Zn 2+ -Zr 4+ could be vital for permanent magnet applications.

Bibliographic Details

Sachin Kumar Godara; null Nomita; Varinder Kaur; A.K. Srivastava; Deepak Basandrai; Jahangeer Ahmed; J. Mohammed; Mandeep Singh; Paramjit Kaur; Amir Mehtab; Tokeer Ahmad; Rahul Kumar Dhaka; Pradip K. Maji; Ashwani Kumar Sood

Elsevier BV

Materials Science; Physics and Astronomy

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