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Title: Study of Semimagnetic Mn-Doped WO{sub 3} Nanoparticles Synthesised by Precipitation Method: Hydrogenation Creates a Promising DMS

Abstract

Abstract Tungsten oxide (WO{sub 3}) nanoparticles doped with different amounts of manganese ions (W{sub 1−x}Mn{sub x}O{sub 3}, where x = 0.011, 0.022 and 0.044) were synthesised by hydraulic acid-assisted precipitation, followed by thermal calcinations. The powders were characterised by X-ray fluorescence (XRF), X-ray diffraction (XRD), diffuse reflectance spectroscopy (DRS) and magnetic measurements. The monoclinic structure at room temperature (∼293 K) found for un-doped WO{sub 3} was preserved even with Mn doping. However, doping with Mn ions caused decease in unit-cell volume and slight increase in crystallite size (CS) of host WO{sub 3}. The hydrogenation was observed to corrode the crystallites without changing in crystalline structure. Controllable room-temperature ferromagnetic (RT-FM) properties were obviously observed with hydrogenated WO{sub 3} doped with Mn. In addition, there existed an optimum doping concentration of Mn in WO{sub 3} to obtain superior FM properties. Therefore, Mn-doped WO{sub 3} nanopowders, owning to these amazingly tunable magnetic properties, could be considered a potential candidate for many applications partially required FM properties such as optical phosphors and catalysts.

Authors:
 [1]
  1. College of Science University of Bahrain, Department of Physics (Bahrain)
Publication Date:
OSTI Identifier:
22773992
Resource Type:
Journal Article
Journal Name:
Journal of Superconductivity and Novel Magnetism
Additional Journal Information:
Journal Volume: 31; Journal Issue: 7; Other Information: Copyright (c) 2018 Springer Science+Business Media, LLC, part of Springer Nature; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1557-1939
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CALCINATION; CATALYSTS; CONCENTRATION RATIO; DOPED MATERIALS; HYDROGENATION; MAGNETIC PROPERTIES; MANGANESE; MANGANESE IONS; MONOCLINIC LATTICES; NANOPARTICLES; NANOSTRUCTURES; PHOSPHORS; POWDERS; PRECIPITATION; SPECTROSCOPY; SYNTHESIS; TEMPERATURE RANGE 0273-0400 K; TUNGSTEN OXIDES; X-RAY DIFFRACTION; X-RAY FLUORESCENCE ANALYSIS

Citation Formats

Dakhel, A. A., E-mail: adakhil@uob.edu.bh. Study of Semimagnetic Mn-Doped WO{sub 3} Nanoparticles Synthesised by Precipitation Method: Hydrogenation Creates a Promising DMS. United States: N. p., 2018. Web. doi:10.1007/S10948-017-4430-9.
Dakhel, A. A., E-mail: adakhil@uob.edu.bh. Study of Semimagnetic Mn-Doped WO{sub 3} Nanoparticles Synthesised by Precipitation Method: Hydrogenation Creates a Promising DMS. United States. doi:10.1007/S10948-017-4430-9.
Dakhel, A. A., E-mail: adakhil@uob.edu.bh. Sun . "Study of Semimagnetic Mn-Doped WO{sub 3} Nanoparticles Synthesised by Precipitation Method: Hydrogenation Creates a Promising DMS". United States. doi:10.1007/S10948-017-4430-9.
@article{osti_22773992,
title = {Study of Semimagnetic Mn-Doped WO{sub 3} Nanoparticles Synthesised by Precipitation Method: Hydrogenation Creates a Promising DMS},
author = {Dakhel, A. A., E-mail: adakhil@uob.edu.bh},
abstractNote = {Abstract Tungsten oxide (WO{sub 3}) nanoparticles doped with different amounts of manganese ions (W{sub 1−x}Mn{sub x}O{sub 3}, where x = 0.011, 0.022 and 0.044) were synthesised by hydraulic acid-assisted precipitation, followed by thermal calcinations. The powders were characterised by X-ray fluorescence (XRF), X-ray diffraction (XRD), diffuse reflectance spectroscopy (DRS) and magnetic measurements. The monoclinic structure at room temperature (∼293 K) found for un-doped WO{sub 3} was preserved even with Mn doping. However, doping with Mn ions caused decease in unit-cell volume and slight increase in crystallite size (CS) of host WO{sub 3}. The hydrogenation was observed to corrode the crystallites without changing in crystalline structure. Controllable room-temperature ferromagnetic (RT-FM) properties were obviously observed with hydrogenated WO{sub 3} doped with Mn. In addition, there existed an optimum doping concentration of Mn in WO{sub 3} to obtain superior FM properties. Therefore, Mn-doped WO{sub 3} nanopowders, owning to these amazingly tunable magnetic properties, could be considered a potential candidate for many applications partially required FM properties such as optical phosphors and catalysts.},
doi = {10.1007/S10948-017-4430-9},
journal = {Journal of Superconductivity and Novel Magnetism},
issn = {1557-1939},
number = 7,
volume = 31,
place = {United States},
year = {2018},
month = {7}
}