对水热法制备的BaFe12 O19纳米颗粒进行了不同温度的热处理,研究热处理温度对纳米钡铁氧体微结构和磁性能的影响.结果表明,随着热处理温度的提升,铁氧体样品粒径逐渐增大,结晶性能趋于完善;水热合成的钡铁氧体纳米颗粒室温测得的矫顽力为92.21Oe,饱和磁化强度为8.87 emu/g,呈现为半硬磁特性;同时,样品的磁性能与热处理温度有密切关系,在800℃处理的纳米钡铁氧体室温饱和磁化强度Ms增加到52.97 emu/g,矫顽力Hc增加到5.052 kOe,居里温度大小为712.2 K,样品转变为硬磁体,转变温度区间定为500 ～ 700℃.
参考文献
| [1] | K.S. Martirosyan;E. Galstyan;S.M. Hossain .Barium hexaferrite nanoparticles: Synthesis and magnetic properties[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2011(1):8-13. |
| [2] | Jianguo Huang;Hanrui Zhuang;WenLan Li .Synthesis and characterization of nano crystalline BaFe_(12)O_(19) powders by low temperature combustion[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,2003(1):149-159. |
| [3] | Rashad, M.M.;Ibrahim, I.A. .Improvement of the magnetic properties of barium hexaferrite nanopowders using modified co-precipitation method[J].Journal of Magnetism and Magnetic Materials,2011(16):2158-2164. |
| [4] | Sozeri, H .Simple recipe to synthesize single-domain BaFe12O19 with high saturation magnetization[J].Journal of Magnetism and Magnetic Materials,2009(18):2717-2722. |
| [5] | M. M. Rashad;I. A. Ibrahim .A novel approach for synthesis of M-type hexaferrites nanopowders via the co-precipitation method[J].Journal of Materials Science. Materials in Electronics,2011(12):1796-1803. |
| [6] | T. Koutzarova;S. Kolev;Ch. Ghelev.Differences in the structural and magnetic properties of nanosized barium hexaferrite powders prepared by single and double microemulsion techniques[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2013:174-180. |
| [7] | C. Sudakar;G. N. Subbanna;T. R. N. Kutty .Wet chemical synthesis of multicomponent hexaferrites by gel-to-crystallite conversion and their magnetic properties[J].Journal of Magnetism and Magnetic Materials,2003(3):253-268. |
| [8] | Dhage, V.N.;Mane, M.L.;Keche, A.P.;Birajdar, C.T.;Jadhav, K.M. .Structural and magnetic behaviour of aluminium doped barium hexaferrite nanoparticles synthesized by solution combustion technique[J].Physica, B. Condensed Matter,2011(4):789-793. |
| [9] | I. Bsoul;S.H. Mahmood .Magnetic and structural properties of BaFe_(12-x)Ga_xO_(19) nanoparticles[J].Journal of Alloys and Compounds,2010(1):110-114. |
| [10] | M.V. Rane;D. Bahadur .Mossbauer and FT-IR studies on non-stoichiometric barium hexa ferrites[J].Journal of Magnetism and Magnetic Materials,1999(2):288-296. |
| [11] | Che S.;Wang J.;Chen QW. .Soft magnetic nanoparticles of BaFe12O19 fabricated under mild conditions[J].Journal of Physics. Condensed Matter,2003(22):L335-L339. |
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