<span style="font-size:11.0pt;mso-bidi-font-size: 10.0pt;font-family:"Times New Roman","serif";mso-fareast-font-family:"Times New Roman"; mso-ansi-language:EN-GB;mso-fareast-language:EN-US;mso-bidi-language:AR-SA" lang="EN-GB">Investigations on Mn_xZn_1-xFe₂O₄(x = 0.1, 0.3 and 0.5) nanoparticles synthesized by sol-gel and co-precipitation methods </span>

Abstract

Mn²⁺ substituted Zn ferrite nanoparticles have been synthesized using two different wet methods, sol-gel and co-precipitation. The doping effect of Mn²⁺ ion concentration on physical properties like structural and magnetic properties is investigated. The crystallite size and lattice parameter increases with increasing Mn²⁺ concentration. EPR study reveals that the line width and <i style="mso-bidi-font-style:normal">g</i>-factor increases with increasing Mn²⁺ concentration for co-precipitated particles whereas the reverse trend for sol-gel technique is observed. However, in both the processes the saturation magnetization (<i style="mso-bidi-font-style:normal">M</i>_s) and coercivity (<i style="mso-bidi-font-style:normal">H</i>_c) increase with increasing Mn²⁺ concentration. In a comparative study, the nanoparticles synthesized bysol-gel are more crystalline in nature as compared to co-precipitated particles.