Co-substitution of zirconium and neodymium on hyperfine interactions and AC susceptibility of SrFe12

• 作 者: M.A.Almessiere Y.Slimani H.Güngüne A.Baykal
• 机 构: Department of Physics,College of Science,Imam Abdulrahman Bin Faisal University,P.O.Box 1982,31441,D
• 出 处: 稀土学报（英文版）
• 发表日期: 2020年3期
• 关键词: Sr hexaferrites Rare earths Mossbauer spectroscopy AC susceptibility ZFC-FC

This study presents the influence of Zn and Nd co-substitution on structure,morphology,AC suscepti-bility and ZFC-FC magnetizations of Sr nanohexaferrites(NHFs),SrFe12-x(Zn,Nd)xO19(0.0 ≤ x ≤ 1.0),which was produced by sol-gel approach.XRD powder patts,scanning electron microscopy(SEM)and high-resolution transmission electron spectroscopy(HR-TEM)approve the synthesis of Sr M-type hex-aferrite.Mossbauer spectra show that Zn2+ions occupy 2b and 4f1 sites while Nd3+ions locate at 2a,4f2 and 12k sites.The magnetic properties of the produced Sr-NHFs were investigated also by ZFC-FC magnetizations and AC susceptibility.According to the MFC-MZFC results(between 2 and 400 K),no blocking temperature was detected which indicates the ferromagnetic(FM)behavior of NHFs.At lower temperatures,a super-spin glass like behavior is disced.The AC susceptibility indicates that the magnetic interactions are improved due to the inclusion of low content(x＝0.1)of Nd3+and Zn2+ions into the Sr-NHFs.However,with further increasing the Nd3+and Zn2+contents(x＝0.9),the magnetic interactions are weakened.