Structural, Optical, Dielectric, and Magnetic Characteristics of Nd Ions Substituted BaFe11(Sn0.5Mg0.5)xO19 M-Type Hexaferrite via Co-precipitation
- 21 Downloads
Nanoparticles (NPs) of barium hexaferrite were synthesized by a chemical co-precipitation technique in an aqueous solution with a nominal composition of BaFe11(Sn0.5Mg0.5)1−xNdxO19 (x = 0, 0.5, 1). XRD and FTIR analyses were performed to study the crystal structure of the magnetic powders (MPs) in order to obtain details on the hexaferrite structure. Grain morphology and elemental composition were assessed by SEM and EDS, respectively, and nano-sized hexagonal platelet-like structures in all MPs were demonstrated. All of the structural parameters such as “a”, “c”, V(cell) and Dx have been altered with successful incorporation of Nd into hexagonal lattices, thereby the band gap Eg first increased x ≤ 0.5 then decreased up to x = 1 (i.e., drawn via a Tauc plot) from 1.53–1.82 eV. The measurements of dielectric properties depict relaxation behavior at higher frequencies. The dielectric measurements increase with increased hexaferrite. Furthermore, the magnetic properties of all MPs were examined by VSM at room temperature (RT). The saturation magnetization (Ms), remnant magnetization (Mr), and coercivity (Hc) were linearly decreased by the SnMg content, whereas an increasing trend appeared with the additional Nd content. However, the squareness ratio increased with an increase in the content (x). These outcomes make this substitution an excellent candidate for multiple applications such as optical, electrical-based devices, circulators, and recording materials.
KeywordsBarium M-type hexaferrites (BaM) Co-precipitation Optical band Dielectric constant Magnetization
This work was done by the support of the National Key Research and Development Program of China (grant no. 2017YFB0701900), and the Science and Technology Commission of Shanghai Municipality (grant nos. 15DZ2260303 and 16DZ2260602).
- 2.Abbas, W., Ahmad, I., Kanwal, M., Murtaza, G., Ali, I., Azhar Khan, M., Akhtar, M.N., Ahmad, M.: Structural and magnetic behavior of Pr-substituted M-type hexagonal ferrites synthesized by sol-gel autocombustion for a variety of applications. J. Magn. Magn. Mater. 374, 187–191 (2015). https://doi.org/10.1016/j.jmmm.2014.08.029 ADSCrossRefGoogle Scholar
- 7.Chawla, S.K., Meena, S.S., Kaur, P., Mudsainiyan, R.K., Yusuf, S.M.: Effect of site preferences on structural and magnetic switching properties of CO-Zr doped strontium hexaferrite SrCoxZrxFe(12-2x)O19. J. Magn. Magn. Mater. 378, 84–91 (2015). https://doi.org/10.1016/j.jmmm.2014.10.168. ADSCrossRefGoogle Scholar
- 9.Belec, B., Dražić, G., Gyergyek, S., Podmiljšak, B., Goršak, T., Komelj, M., Nogués, J., Makovec, D.: Novel Ba-hexaferrite structural variations stabilized on the nanoscale as building blocks for epitaxial bi-magnetic hard/soft sandwiched maghemite/hexaferrite/maghemite nanoplatelets with out-of-plane easy axis and enhanced magnetization. Nanoscale. 9, 17551–17560 (2017). https://doi.org/10.1039/C7NR05894B CrossRefGoogle Scholar
- 13.Xie, Y., Liu, J., Hong, X., Duan, J., Le, Z., Gao, Y., Ling, Y., Huang, Y., Qin, Y., Zhong, R., Yang, F.: Synthesis and magnetic properties of BaFe11.92La(0.08-x)NdxO19(x=0, 0.02, 0.04, 0.06, 0.08) via gel-precursor self-propagating combustion process. J. Magn. Magn. Mater. 377, 172–175 (2015). https://doi.org/10.1016/j.jmmm.2014.10.060 ADSCrossRefGoogle Scholar
- 14.Kaur, T., Kumar, S., Bhat, B.H., Want, B., Srivastava, A.K.: Effect on dielectric, magnetic, optical and structural properties of Nd–Co substituted barium hexaferrite nanoparticles. Appl. Phys. A Mater. Sci. Process. 119, 1531–1540 (2015). https://doi.org/10.1007/s00339-015-9134-z ADSCrossRefGoogle Scholar
- 21.Yang, Y., Wang, F., Huang, D., Shao, J., Tang, J., Mehmood, K., Rehman, U.: Influence of Sn-Mg co-substitution on the microstructural and magnetic characteristics of M-type SrCaLa hexagonal ferrites. J. Magn. Magn. Mater. 452, 100–107 (2018). https://doi.org/10.1016/j.jmmm.2017.12.047 ADSCrossRefGoogle Scholar
- 25.Iqbal, M.J., Farooq, S.: Could binary mixture of Nd – Ni ions control the electrical behavior of strontium – barium M-type hexaferrite nanoparticles ? Mater. Res. Bull. 46, 662–667 (2011). https://doi.org/10.1016/j.materresbull.2011.01.025 CrossRefGoogle Scholar
- 32.R. Manjula, V.R.K. Murthy, J. Sobhanadri, R. Manjula, V.R.K. Murthy, J. Sobhanadri: Electrical conductivity and thermoelectric power measurements of some lithium – titanium ferrites electrica ’ conductivity and thermoelectric power measurements of some lithium-titanium ferrites, 2929. 59, 2929 (2013). doi: https://doi.org/10.1063/1.336954 ADSCrossRefGoogle Scholar
- 41.Kaur, T., Kumar, S., Bhat, B.H., Want, B., Srivastava, A.K.: Effect on dielectric, magnetic, optical and structural properties of Nd–Co substituted barium hexaferrite nanoparticles. Appl. Phys. A Mater. Sci. Process. 119, 1531–1540 (2015). https://doi.org/10.1007/s00339-015-9134-z ADSCrossRefGoogle Scholar