Ferromagnetic spin-order in Mg-doped SnS2 nanoflowers prepared by hydrothermal method |
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| Affiliation: | 1. Department of Applied Physics, Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Faculty of Science, Tianjin University, Tianjin 300072, People’s Republic of China;2. School of Science, Tianjin Chengjian University, Tianjin 300384, People’s Republic of China;1. Department of Physics, Shanghai Polytechnic University, Shanghai 201209, China;2. School of Microelectronic of Fudan University, Shanghai 200433, China;3. Key Laboratory of Polar Materials and Devices, East China Normal University, Shanghai 200241, China;1. Department of Physics, Annamalai University, Annamalai Nagar 608002, Tamil Nadu, India;2. Chemistry Wing of DDE, Annamalai University, Annamalai Nagar 608002, Tamil Nadu, India;3. Department of Chemistry, Annamalai University, Annamalai Nagar 608002, Tamil Nadu, India;1. Department of Applied Physics, Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Faculty of Science, Tianjin University, Tianjin 300072, People’s Republic of China;2. College of Chemical Engineering, North China University of Science and Technology, Tangshan 063009, People’s Republic of China;1. Nano-Information Technology Academy (NITA), Dongguk University, Seoul, Republic of Korea;2. Quantum-Functional Semiconductor Research Center, Dongguk University, Seoul, Republic of Korea;3. Department of Physics and Nanotechnology, SRM Institute of Science and Technology, Kattankulathur, India;4. Center of Research Excellence in Corrosion, King Fahd University of Petroleum & Minerals, Saudi Arabia |
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| Abstract: | Mg-doped SnS2 nanoflowers were synthesized by hydrothermal method. The XRD and absorption spectra analyses reveal that the incorporated Mg atoms substitute for Sn atoms in SnS2 lattice and red-shift the band-gap at low doping concentration (≤4 at%). With further doping, a transformation of Mg atoms from substitutional sites to interstitial sites occurs. The ferromagnetism of SnS2 nanoflowers is enhanced non-monotonously with Mg doping and the largest saturation magnetization of 2.11×10−3 emu/g appears in 4 at% Mg-doped SnS2. The holes created by Mg substituted incorporation may be the origin of the ferromagnetism. On the other hand, interstitial Mg atoms play a negative role in enhancing the ferromagnetism due to the holes compensation effect. |
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| Keywords: | Ferromagnetism p–p Coupling |
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