Synthesis and study of electrical and magnetic properties of vanadium oxide micro and nanosized rods grown using pulsed laser deposition technique |
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| Authors: | N Rama MS Ramachandra Rao |
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| Institution: | 1. Microelectronics and Materials Physics Laboratories, University of Oulu, P.O. Box 4500, FI-90014 Oulu, Finland;2. Department of Physics, Chemistry and Biology, Linköping University, SE-581 83, Linköping, Sweden;1. Thermal Systems Group, ISRO Satellite Centre, Bangalore 560017, India;2. Department of Nanotechnology, Center for Post Graduate Studies, Visvesvaraya Institute of Advance Technology, Visvesvaraya Technological University, Bengaluru Region, Muddenahalli, Chikkaballapur District 562101, India;1. Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi, Piazza del Viminale 1, 00184 Roma, Italy;2. Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca’ Foscari Venezia, via Torino 155/b, 30172 Mestre, Venezia, Italy;3. CNR-IFN, Istituto di Fotonica e Nanotecnologie, CSMFO Lab. & FBK-CMM, Via alla Cascata 56/C, 38123 Povo, Trento, Italy;4. Division of Materials Science, Department of Engineering Sciences and Mathematics, Luleå University of Technology, 971 87 Luleå, Sweden;5. Meridionale Impianti SpA, Via Senatore Simonetta 26/D, 20867 Caponago, Monza Brianza, Italy;6. Laboratoire des Technologies Innovantes, LTI, Département de Génie industriel ENSA – Tanger, Université Abdelmalek Essaâdi, Tanger, Morocco;7. Institute of Low Temperature and Structure Research, PAS, ul. Okolna 2, 50-422, Wroclaw, Poland;8. IFAC-CNR Istituto di Fisica Applicata, Via Madonna del Piano 10, 50019, Sesto Fiorentino, FI, Italy;9. Dipartimento di Fisica e Astronomia G. Galilei, Università di Padova, Via Marzolo 8, 35131, Padova, Italy;1. Laser & Plasma Surface Processing Section, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India;2. Department of Physics, University of Pune, Pune 411007, India;1. Functional Nanomaterials & Devices Lab, Centre for Nanotechnology & Advanced Biomaterials and School of Electrical & Electronics Engineering, SASTRA University, Thanjavur-613 401, India;2. Solid State Physics Laboratory, New Delhi-110 054, India;1. Material Research Laboratory, C. H. C. Arts, S. G. P. Commerce, and B.B.J.P. Science College, Taloda, 425413, M.S., India;2. R. F. N. S. Senior Science College, Akkalkuwa, 425415, M.S., India;3. Department of Applied Science & Humanities, Government College of Engineering, Jalgaon, 425001, M.S., India;4. q-SpinTech & Nanomaterials Laboratory, Department of Physics, Shivaji University, Kolhapur, 416004, M.S., India |
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| Abstract: | Vanadium oxide micro and nanosized rods were grown using pulsed laser deposition technique under different oxygen pressures. X-ray diffractogram shows a predominant mixture of vanadium dioxide, VO2 and Magneli phase, V3O7. The diameters of the rods were found to increase from 300 nm to 2.3 μm with increase in oxygen pressure from 0.1 mbar to 0.5 mbar as seen from high resolution scanning electron microscope images. Raman spectra of the rods show peaks at all the characteristic vibrations corresponding to that of V Ox phase. The 0.5 mbar oxygen deposited sample shows a semiconducting behavior from 300 to 77 K and is paramagnetic down to 5 K. Using versatile pulsed laser deposition we have established the tunability of the dimensions of V Ox nanorods which can find numerous potential applications in electrochemistry, catalysis, etc. |
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