Room temperature ferromagnetic property of Ag2Mo2O7 nanowires

Magnetic property of anorthic phase Ag2Mo2O7 nanowires with width of 2 μm and length up to 40 μm synthesized by hydrothermal method was studied for the first time. The Ag2Mo2O7 nanowires exhibit ferromagnetic property at room temperature with coercivity 127.7 Oe and remanent magnetization 16.9×10−3 emu/g. The magnetic mechanism has been discussed according to the calculated results of the spin-polarized density functional theory (DFT), which was carried out by the Vienna ab initio Simulation Package (VASP) using projector augmented wave (PAW) pseudopotential to describe the interaction between electron and ion for Ag2Mo2O7 crystal, demonstrating that the magnetism is caused by oxygen vacancies. The photoluminescence spectrum measured at room temperature also indicates the oxygen vacancies in the Ag2Mo2O7 nanowires.