Preparation, structure and ferromagnetic properties of the nanocrystalline Ti 1- x Mn x O 2 thin films grown by radio frequency magnetron co-sputtering
作者： Ding Peng , Liu Fa-Min , Yang Xin-An , Li Jian-Qi
DOI: 10.1088/1674-1056/17/2/060
关键词: Crystal structure 、 Saturation (magnetic) 、 Nuclear magnetic resonance 、 Nanocrystalline material 、 Analytical chemistry 、 Ferromagnetic material properties 、 Coercivity 、 Ferromagnetism 、 Vacancy defect 、 Cavity magnetron 、 Materials science 、 General Physics and Astronomy
摘要: This paper reported that the Mn-doped TiO2 films were prepared by radio frequency (RF) magnetron co-sputtering. X-ray diffraction measurements indicate samples are easy to form rutile structure, and sizes of crystal grains grow big as Mn concentration increases. photoemission spectroscopy high resolution transmission electron microscope photographs confirm manganese ions have been effectively doped into when is lower than 21%. The magnetic property show Ti1-xMnxO2 (x = 0.21) ferromagnetic at room temperature, saturation magnetization, coercivity, field 16.0emu/cm3, 167.5 × 80A/m 3740 respectively. room-temperature ferromagnetism can be attributed new structure formed substitution Mn4+ for Ti4+ lattice, could explained O vacancy (VO)-enhanced model.
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