Influence of Ti⁴⁺ doping on hyperfine field parameters of Mg_0.95Mn_0.05Fe_2-2xTi_2xO₄ (0≤x≤0.7)

来源期刊：中南大学学报(英文版)2010年第6期

论文作者：KUMAR S PRAKASH R ALIMUDDIN CHOI H K SONG J I KOO B H CHUNG H JEONG H LEE C G

文章页码：1139 - 1143

Key words：spinel ferrite; Mössbauer spectroscopy; hyperfine magnetic field; isomer shift; Ti⁴⁺ doping

Abstract: The mixed spinel ferrite system Mg_0.95Mn_0.05Fe_2-2xTi_2xO₄ (0≤x≤0.7) was synthesized by the conventional solid-state reaction technique. The effect of Ti⁴⁺ doping was studied by using the M？ssbauer spectroscopy measurements at room temperature. From the analysis of the M？ssbauer spectra, it is observed that s-electron density, electric field gradient (EFG), quadrupole coupling constant (QCC) and the net hyperfine magnetic fields acting on the M？ssbauer nuclei–Fe_A³⁺ and Fe_B³⁺ change with the increase of Ti⁴⁺ doping in Mg_0.95Mn_0.05Fe₂O₄. The hyperfine magnetic field decreases with the increase of Ti⁴⁺ doping.