Structural and ferromagnetic properties of Sn_0.95-x(Mn_0.05,Li_x)O₂

Sn_0.95-x(Mn_0.05,Li_x)O₂ (0 ≤ x ≤ 0.08) with well retained host structure was prepared by using conventional solid sintering method. The structure and magnetism evolutions actually show sensitivity to the Li doping level, although the precise position and real content of Li were hard to be determined by powder X-ray diffraction. The measured magnetic susceptibility indicates that Sn_0.95-x(Mn_0.05,Li_x)O₂ is ferromagnetic at 5 K, but paramagnetic at room temperature. The saturation magnetization changes with Li doping level, reaching its maximum of M_s = 1.06 μ_B/Mn when x = 0.06. Li ions can effectively mediate the density of carriers in Sn_0.95Mn_0.05O₂, further enhancing the magnetic moment at low temperature. - Highlights: • Sn_0.95-x(Mn_0.05,Li_x)O₂ (0 ≤ x ≤ 0.08) with well retained host structure was prepared. • Sensitivity to Li⁺ doping level on structure and magnetism evolutions was found. • Sn_0.95-x(Mn_0.05,Li_x)O₂ is ferromagnetic at 5 K, but paramagnetic at room temperature. • The saturation magnetization reaches a maximum of M_s = 1.06 μ_B/Mn when x = 0.06