中国物理B ›› 2022, Vol. 31 ›› Issue (2): 27502-027502.doi: 10.1088/1674-1056/ac1412

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Tailoring the optical and magnetic properties of La-BaM hexaferrites by Ni substitution

Hafiz T. Ali1, M. Ramzan2, M Imran Arshad2, Nicola A. Morley3, M. Hassan Abbas2, Mohammad Yusuf4, Atta Ur Rehman2, Khalid Mahmood2, Adnan Ali2, Nasir Amin2, and M. Ajaz-un-Nabi2,†   

  1. 1 Department of Mechanical Engineering, College of Engineering, Taif University, Taif 21944, Saudi Arabia;
    2 Department of Physics, Government College University, Faisalabad, Pakistan;
    3 Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mapping St., Sheffield, S1 3JD, UK;
    4 Department of Clinical Pharmacy, College of Pharmacy, Taif University, Taif 21944, Saudi Arabia
  • 收稿日期:2021-04-04 修回日期:2021-07-12 接受日期:2021-07-14 出版日期:2022-01-13 发布日期:2022-01-25
  • 通讯作者: M. Ajaz-un-Nabi E-mail:majazunnabi@gcuf.edu.pk
  • 基金资助:
    Project supported by the Taif University Researchers Supporting Project number (TURSP-2020/293), Taif University, Taif, Saudi Arabia.

Tailoring the optical and magnetic properties of La-BaM hexaferrites by Ni substitution

Hafiz T. Ali1, M. Ramzan2, M Imran Arshad2, Nicola A. Morley3, M. Hassan Abbas2, Mohammad Yusuf4, Atta Ur Rehman2, Khalid Mahmood2, Adnan Ali2, Nasir Amin2, and M. Ajaz-un-Nabi2,†   

  1. 1 Department of Mechanical Engineering, College of Engineering, Taif University, Taif 21944, Saudi Arabia;
    2 Department of Physics, Government College University, Faisalabad, Pakistan;
    3 Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mapping St., Sheffield, S1 3JD, UK;
    4 Department of Clinical Pharmacy, College of Pharmacy, Taif University, Taif 21944, Saudi Arabia
  • Received:2021-04-04 Revised:2021-07-12 Accepted:2021-07-14 Online:2022-01-13 Published:2022-01-25
  • Contact: M. Ajaz-un-Nabi E-mail:majazunnabi@gcuf.edu.pk
  • Supported by:
    Project supported by the Taif University Researchers Supporting Project number (TURSP-2020/293), Taif University, Taif, Saudi Arabia.

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摘要： We investigate the impact of Ni insertion on the structural, optical, and magnetic properties of Ba0.8La0.2Fe12-xNixO19 hexaferrites (Ni substituted La-BaM hexaferrites). Samples were prepared using the conventional co-precipitation method and sintered at 1000℃ for 4 hours to assist the crystallization process. An analysis of the structure of the samples was carried out using an x-ray diffraction (XRD) spectrometer. The M-type hexagonal structure of all the samples was confirmed using XRD spectra. The lattice parameters a and c were found to be in the ranges of 5.8925 ±0.001 nm-5.8952 ±0.001 nm and 23.2123 ±0.001 nm-23.2219 ±0.001 nm, respectively. The M-type hexagonal nature of the prepared samples was also indicated by the presence of corresponding FT-IR bands and Raman modes in the FT-IR and Raman spectra, respectively. EDX results confirmed the successful synthesis of the samples according to the required stoichiometric ratio. A UV-vis spectrometer was used to record the absorption spectra of the prepared samples in the wavelength range of 200 nm-1100 nm. The optical energy bandgap of the samples was found to be in the range of 1.21 eV-3.39 eV. The M-H loops of the samples were measured at room temperature at an applied magnetic field range of 0 kOe-60 kOe. A high saturation magnetization of 99.92 emu/g was recorded in the sample with x=0 at a microwave operating frequency of 22.2 GHz. This high value of saturation magnetization is due to the substitution of La3+ ions at the spin-up (12k, 2a, and 2b) sites. The Ni substitution is proven to be a potential candidate for the tuning of the optical and magnetic parameters of M-type hexaferrites. Therefore, we suggest that the prepared samples are suitable for use in magneto-optic applications.

关键词: M-type hexaferrite, nanostructured materials, magnetic properties, optical properties

Abstract: We investigate the impact of Ni insertion on the structural, optical, and magnetic properties of Ba0.8La0.2Fe12-xNixO19 hexaferrites (Ni substituted La-BaM hexaferrites). Samples were prepared using the conventional co-precipitation method and sintered at 1000℃ for 4 hours to assist the crystallization process. An analysis of the structure of the samples was carried out using an x-ray diffraction (XRD) spectrometer. The M-type hexagonal structure of all the samples was confirmed using XRD spectra. The lattice parameters a and c were found to be in the ranges of 5.8925 ±0.001 nm-5.8952 ±0.001 nm and 23.2123 ±0.001 nm-23.2219 ±0.001 nm, respectively. The M-type hexagonal nature of the prepared samples was also indicated by the presence of corresponding FT-IR bands and Raman modes in the FT-IR and Raman spectra, respectively. EDX results confirmed the successful synthesis of the samples according to the required stoichiometric ratio. A UV-vis spectrometer was used to record the absorption spectra of the prepared samples in the wavelength range of 200 nm-1100 nm. The optical energy bandgap of the samples was found to be in the range of 1.21 eV-3.39 eV. The M-H loops of the samples were measured at room temperature at an applied magnetic field range of 0 kOe-60 kOe. A high saturation magnetization of 99.92 emu/g was recorded in the sample with x=0 at a microwave operating frequency of 22.2 GHz. This high value of saturation magnetization is due to the substitution of La3+ ions at the spin-up (12k, 2a, and 2b) sites. The Ni substitution is proven to be a potential candidate for the tuning of the optical and magnetic parameters of M-type hexaferrites. Therefore, we suggest that the prepared samples are suitable for use in magneto-optic applications.

Key words: M-type hexaferrite, nanostructured materials, magnetic properties, optical properties

中图分类号:  (Studies of specific magnetic materials)

  • 75.50.-y
75.75.-c (Magnetic properties of nanostructures)