A comparative study on the magnetic properties of MFe12O19 and MAlFe11O19 (M=Sr, Ba and Pb) hexaferrites with different morphologies
作者： Sonal Singhal , Tsering Namgyal , Jagdish Singh , Kailash Chandra , Sandeep Bansal
DOI: 10.1016/J.CERAMINT.2011.02.001
关键词:
摘要: Abstract M-type nano hexaferrites MFe 12 O 19 and MAlFe 11 (M = Sr, Ba Pb) have been prepared by the sol–gel method to investigate shielding effect of inorganic ions KCl, KBr KI on phase growth ferrites. FTIR frequency bands in range 560–580 cm −1 430–470 cm corresponds formation tetrahedral octahedral clusters metal oxides ferrites, respectively. X-ray powder diffractographs do not show any peaks for as obtained samples showing amorphous nature samples, however regular structure all annealed samples. There is negligible small change lattice parameters ‘ a ’ c with substitution hexagonal ferrites aluminium. Magnetic measurements showed that coercivity (Hc) values KCl enhance due act deactivators. However, value decreases it oxidise I 2 during annealing. The saturation magnetization Al 3+ ion Fe preferential occupancy aluminium sites.
elsevier.com
sci-hub.se 参考文章(14)
Harold Philip Klug, Leroy Elbert Alexander, X-ray diffraction procedures for polycrystalline and amorphous materials ,(1954)
Si-Dong Kim, Jung-Sik Kim, Magnetic properties of Sr-ferrites synthesized in molten flux Journal of Magnetism and Magnetic Materials. ,vol. 307, pp. 295- 300 ,(2006) , 10.1016/J.JMMM.2006.04.019
Muhammad Javed Iqbal, Muhammad Naeem Ashiq, Pablo Hernandez-Gomez, Jose Maria Munoz, None, Synthesis, physical, magnetic and electrical properties of Al–Ga substituted co-precipitated nanocrystalline strontium hexaferrite Journal of Magnetism and Magnetic Materials. ,vol. 320, pp. 881- 886 ,(2008) , 10.1016/J.JMMM.2007.09.005
I V Zavislyak, M A Popov, G Srinivasan, A cut-off millimeter wave resonator technique for mapping magnetic parameters in hexagonal ferrites Measurement Science and Technology. ,vol. 20, pp. 115704- ,(2009) , 10.1088/0957-0233/20/11/115704
F. Sandiumenge, S. Gali, J. Rodriguez, X-ray profile analysis of cation distribution in SrAlxFe12−xO19 solid solution Materials Research Bulletin. ,vol. 23, pp. 685- 692 ,(1988) , 10.1016/0025-5408(88)90033-5
L García-Cerda, Study of SrFe12O19 synthesized by the sol–gel method Journal of Alloys and Compounds. ,vol. 369, pp. 182- 184 ,(2004) , 10.1016/J.JALLCOM.2003.09.099
A. Pradeep, G. Chandrasekaran, FTIR study of Ni, Cu and Zn substituted nano-particles of MgFe2O4 Materials Letters. ,vol. 60, pp. 371- 374 ,(2006) , 10.1016/J.MATLET.2005.08.053
F. M. M. Pereira, C. A. R. Junior, M. R. P. Santos, R. S. T. M. Sohn, F. N. A. Freire, J. M. Sasaki, J. A. C. de Paiva, A. S. B. Sombra, Structural and dielectric spectroscopy studies of the M-type barium strontium hexaferrite alloys (Ba x Sr 1−x Fe 12 O 19 ) Journal of Materials Science: Materials in Electronics. ,vol. 19, pp. 627- 638 ,(2008) , 10.1007/S10854-007-9411-5
Ying Liu, Michael G.B. Drew, Jingping Wang, Milin Zhang, Yue Liu, Efficiency and purity control in the preparation of pure and/or aluminum-doped barium ferrites by hydrothermal methods using ferrous ions as reactants Journal of Magnetism and Magnetic Materials. ,vol. 322, pp. 366- 374 ,(2010) , 10.1016/J.JMMM.2009.09.062
L. Lechevallier, J.M. Le Breton, J.F. Wang, I.R. Harris, Structural analysis of hydrothermally synthesized Sr1−xSmxFe12O19 hexagonal ferrites Journal of Magnetism and Magnetic Materials. ,vol. 269, pp. 192- 196 ,(2004) , 10.1016/S0304-8853(03)00591-2