Effect of non-stoichiometry in lead hexaferrites on magnetic and dielectric properties
作者： S. Prathap , W. Madhuri , Sher Singh Meena
DOI: 10.1016/J.MATCHEMPHYS.2018.08.034
关键词:
摘要: Abstract The effect of iron deficiency on the structural, electrical and magnetic properties nano PbFe12-xO19-δ (where x = 0.0, 0.25, 0.50, 0.75 1.0) hexaferrites prepared by sol-gel auto combustion further processed microwaves is presented. structure studied using transmission electron microscope (TEM) showed hexagonal cylindrical particles with an average size ∼20 nm. Selected area diffraction (SAED) reflected highly crystalline nature these nanoparticles. From dielectric characterizations ac-conductivity, constant loss tangent are analysed for pure modified hexaferrites. analysis revealed formation single-domain structure. Saturation magnetization (MS) decreases from 63.2 (x = 0) to 38.2 (x = 1.0) emu/g increasing Fe ions deficiency. Room temperature Mossbauer spectra show five sextets all compositions confirmed single phase formation. relative 12k (↑) site 4f2 (↓) increases drastically in Pb-hexaferrites.
sci-hub.se 参考文章(39)
R. Pattanayak, S. Panigrahi, T. Dash, R. Muduli, D. Behera, Electric transport properties study of bulk BaFe12O19 by complex impedance spectroscopy Physica B: Condensed Matter. ,vol. 474, pp. 57- 63 ,(2015) , 10.1016/J.PHYSB.2015.06.006
R.K. Mudsainiyan, S.K. Chawla, S.S. Meena, Neetika Sharma, Ripandeep Singh, A. Das, Cations distribution and magnetic properties of Co–Zr doped BaCo x Zr x Fe (12−2x) O 19 prepared via citrate precursor sol–gel route Ceramics International. ,vol. 40, pp. 16617- 16626 ,(2014) , 10.1016/J.CERAMINT.2014.08.022
A. L. Guerrero-Serrano, M. Mirabal-García, S. A. Palomares-Sánchez, Synthesis and Study of the Lanthanum Substitution in the Lead M-Type Hexaferrite Journal of Superconductivity and Novel Magnetism. ,vol. 27, pp. 1709- 1713 ,(2014) , 10.1007/S10948-014-2489-0
Nan Yang, Haibin Yang, Junji Jia, Xiaofen Pang, Formation and magnetic properties of nanosized PbFe12O19 particles synthesized by citrate precursor technique Journal of Alloys and Compounds. ,vol. 438, pp. 263- 267 ,(2007) , 10.1016/J.JALLCOM.2006.08.037
F M Gu, W W Pan, Q F Liu, J B Wang, Electrospun magnetic SrFe12O19 nanofibres with improved hard magnetism Journal of Physics D. ,vol. 46, pp. 445003- ,(2013) , 10.1088/0022-3727/46/44/445003
A. L. Guerrero-Serrano, S. A. Palomares-Sánchez, M. Mirabal-García, J. A. Matutes-Aquino, Magneto-Structural Characterization of Strontium Substituted Lead Hexaferrite Journal of Superconductivity and Novel Magnetism. ,vol. 25, pp. 1223- 1228 ,(2012) , 10.1007/S10948-012-1411-X
E.W. Gorter, Saturation magnetization of some ferrimagnetic oxides with hexagonal crystal structures Proceedings of the IEE - Part B: Radio and Electronic Engineering. ,vol. 104, pp. 255- 260 ,(1957) , 10.1049/PI-B-1.1957.0042
S Dı́az-Castañón, J.C Faloh-Gandarilla, F Leccabue, G Albanese, The optimum synthesis of high coercivity Pb–M hexaferrite powders using modifications to the traditional ceramic route Journal of Magnetism and Magnetic Materials. ,vol. 272, pp. 2221- 2223 ,(2004) , 10.1016/J.JMMM.2003.12.923
J.C Faloh Gandarilla, S Dı́az-Castañón, N Suárez Almodovar, Activation volume and coercivity in aluminum-substituted Pb–M hexaferrites Journal of Magnetism and Magnetic Materials. ,vol. 222, pp. 271- 276 ,(2000) , 10.1016/S0304-8853(00)00431-5
Irshad Ali, Nasira Shaheen, MU Islam, Muhammad Irfan, Muhammad Naeem Ashiq, M Asif Iqbal, Aisha Iftikhar, None, Study of electrical and dielectric behavior of Tb +3 substituted Y-type hexagonal ferrite Journal of Alloys and Compounds. ,vol. 617, pp. 863- 868 ,(2014) , 10.1016/J.JALLCOM.2014.08.055