Khan, Gobinda Gopal and Ghosh, Shyamsundar and Sarkar, Ayan and Mandal, Guruprasad and Mukherjee, Goutam Dev and Unnikrishnan, Manju and Banu, Nasrin and Dev, Bhupendra Nath (2015) Defect engineered d(0) ferromagnetism in tin-doped indium oxide nanostructures and nanocrystalline thin-films. Journal of Applied Physics, 118 (7). ISSN 0021-8979

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Origin of unexpected defect engineered room-temperature ferromagnetism observed in tin-doped indium oxide (ITO) nanostructures (Nanowires, Nano-combs) and nanocrystalline thin films fabricated by pulsed laser deposition has been investigated. It is found that the ITO nanostructures prepared under argon environment exhibit strongest ferromagnetic signature as compared to that nanocrystalline thin films grown at oxygen. The evidence of singly ionized oxygen vacancy (V-0(+)) defects, obtained from various spectroscopic measurements, suggests that such V-0(+) defects are mainly responsible for the intrinsic ferromagnetic ordering. The exchange interaction of the defects provides extensive opportunity to tune the room-temperature d(0) ferromagnetism and optical properties of ITOs. (C) 2015 AIP Publishing LLC.

Item Type: Article
Subjects: Microstructure and Characterization
Engineering Materials
Depositing User: Bidhan Chaudhuri
Date Deposited: 30 Dec 2015 05:51
Last Modified: 30 Dec 2015 05:51

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