Magnetic Properties of Barium Ferrite Prepared by Hydrothermal Synthesis

Abstract:

M-type barium ferrite (BaFe_l2O₁₉) receives much attention due to the remarkable properties of the bulk materials: large magnetic anisotropy, sufficient saturation magnetization, non-toxic, excellent chemical stability and good corrosion resistivity. Using stoichiometric amounts of iron nitrate, barium nitrate and sodium hydroxide as the starting materials, we have prepared BaFe_l2O₁₉ by hydrothermal synthesis method. The results show that when the n (Fe³⁺)/n (Ba²⁺) ratio of 6 and n (OH⁻)/n (NO₃⁻) ratio of 2, the morphology of BaFe₁₂O₁₉ is hexagonal platelets which approximately 800 nm in length and 50 nm in thickness. The coercivity of BaFe₁₂O₁₉ is 1286 Oe and the saturation magnetization is 23.7 emu/g. The BaFe₁₂O₁₉/phenolic resin composite has been prepared and the permeability of the BaFe_l2O₁₉/phenolic resin composite was measured.

• Periodical: Key Engineering Materials (Volume 655)
• Pages: 178-181
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.655.178
• Online since: July 2015
• Authors: Min Chen, Run Hua Fan*, Gui Fang Liu, Xu Ai Wang, Kai Sun
• Keywords: Barium Ferrite, Hydrothermal Synthesis, Permeability, Saturation Magnetization

References

[1] Li Jing, Fan Runhua, Chen Defeng, Surfactant Regulation Preparation of Ba-Hexaferrite Nanoparticles[J], Rare Metals Material and Engineering. 1(2003), 161-164.

[2] Mu G, Pan X, Chen N, Na Chen, Preparation and magnetic properties of barium hexaferrite nanorods [J]. Materials Research Bulletin, 2008, 43(6): 1369-1375.

DOI: 10.1016/j.materresbull.2007.06.052

[3] Bregar V B. Advantages of ferromagnetic nanoparticle composites in microwave absorbers[J]. Magnetics, IEEE Transactions on, 2004, 40(3): 1679-1684.

DOI: 10.1109/tmag.2004.826622

[4] Jacobo S E, Domingo-Pascual C, Rodriguez-Clemente R, Synthesis of ultrafine particles of barium ferrite by chemical coprecipitation[J]. Journal of materials science, 1997, 32(4): 1025-1028.

DOI: 10.1023/a:1018582423406

[5] Sudakar C, Subbanna G N, Kutty T R N. Wet chemical synthesis of multicomponent hexaferrites by gel-to-crystallite conversion and their magnetic properties[J]. Journal of magnetism and magnetic materials, 2003, 263(3): 253-268.

DOI: 10.1016/s0304-8853(02)01572-x

[6] Duong G V, Sato Turtelli R, Thuan B D, Magnetic properties of nanocrystalline BaFe12O19 prepared by hydrothermal method[J]. Journal of Non-Crystalline Solids, 2007, 353(8): 811-813.

DOI: 10.1016/j.jnoncrysol.2006.12.047

[7] Drofenik M, Ban I, Makovec D, The hydrothermal synthesis of super-paramagnetic barium hexaferrite particles[J]. Materials Chemistry and Physics, 2011, 127(3): 415-419.

DOI: 10.1016/j.matchemphys.2011.02.037

[8] Drofenik M, Kristl M, Žnidaršič A, et al. Hydrothermal synthesis of Ba-hexaferrite nanoparticles[J]. Journal of the American Ceramic Society, 2007, 90(7): 2057-(2061).

DOI: 10.1111/j.1551-2916.2007.01740.x

[9] Ataie A, Piramoon M R, Harris I R, et al. Effect of hydrothermal synthesis environment on the particle morphology, chemistry and magnetic properties of barium hexaferrite[J]. Journal of materials science, 1995, 30(22): 5600-5606.

DOI: 10.1007/bf00356692

[10] Shi Z, Fan R, Zhang Z, et al. Experimental realization of simultaneous negative permittivity and permeability in Ag/Y3Fe5O12 random composites[J]. Journal of Materials Chemistry C, 2013, 1(8): 1633-1637.

DOI: 10.1039/c2tc00479h