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- W2056081651 abstract "Abstract Sn 1− x Mn x O 2 ( x =0.01–0.05) thin films were synthesized on quartz substrate using an inexpensive ultrasonic spray pyrolysis technique. The influence of doping concentration and substrate temperature on structural and magnetic properties of Sn 1− x Mn x O 2 thin films was systematically investigated. X-ray diffraction (XRD) studies of these films reflect that the Mn 3+ ions have substituted Sn 4+ ions without changing the tetragonal rutile structure of pure SnO 2 . A linear increase in c- axis lattice constant has been observed with corresponding increase in Mn concentration. No impurity phase was detected in XRD patterns even after doping 5 at% of Mn. A systematic change in magnetic behavior from ferromagnetic to paramagnetic was observed with increase in substrate temperature from 500 to 700 °C for Sn 1− x Mn x O 2 ( x =0.01) films. Magnetic studies reveal room-temperature ferromagnetism (RTFM) with 3.61×10 −4 emu saturation magnetization and 92 Oe coercivity in case of Sn 1− x Mn x O 2 ( x =0.01) films deposited at 500 °C. However, paramagnetic behavior was observed for the films deposited at a higher substrate temperature of 700 °C. The presence of room-temperature ferromagnetism in these films was observed to have an intrinsic origin and could be obtained by controlling the substrate temperature and Mn doping concentration." @default.
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- W2056081651 date "2009-11-01" @default.
- W2056081651 modified "2023-09-30" @default.
- W2056081651 title "Room-temperature ferromagnetism in Sn1−xMnxO2 nanocrystalline thin films prepared by ultrasonic spray pyrolysis" @default.
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- W2056081651 doi "https://doi.org/10.1016/j.physb.2009.06.144" @default.
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