The effect o f Mn sub stitution o n structural and magnetic pr operties o f strontium he xaferrite n anoparti cles

Strontium hexaferrite (SrFe۱۲ O۱۹) has been extensive ly used as a permanent magnet due to its low cost, relativ ly high coercivity, corrosion resistance and chemical s tability [۱]. The conventional met hod for production of this material i s the solid-state reaction at temper atures higher than ۱۱۰۰ oC. This method has in herent disadvantages such as chemical homogeneity, coarse grain size and entrance impuritie s during the milling process. In order to get pure crystalline single domain particles of str ontium hexaferrite, different chemical method s are reported. In this work, the d oping effec t of manganese (Mn) on the crys tal structure and magne tic properties of nano crystalline st rontium hexaferrite was investigated that prepared by sol-gel combustion method.

کلیدواژه ها:

Strontium hexaferrite ، Nanop articles ، So l-gel method ، Magnetic properties.