Premium
Raman spectroscopic study of oxidation and phase transition in W 18 O 49 nanowires
Author(s) -
Lu D. Y.,
Chen J.,
Zhou J.,
Deng S. Z.,
Xu N. S.,
Xu J. B.
Publication year - 2007
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1620
Subject(s) - nanowire , raman spectroscopy , tungsten trioxide , materials science , high resolution transmission electron microscopy , monoclinic crystal system , orthorhombic crystal system , x ray photoelectron spectroscopy , phase transition , laser power scaling , vapor–liquid–solid method , laser , analytical chemistry (journal) , tungsten , nanotechnology , crystal structure , chemical engineering , chemistry , crystallography , transmission electron microscopy , optics , condensed matter physics , metallurgy , organic chemistry , physics , engineering
W 18 O 49 nanowires were synthesized by a high‐temperature physical evaporation technique. The structure, morphology, and composition of the nanowires were characterized by SEM, EMPA, XRD, XPS, and HRTEM techniques. The intrinsic Raman spectrum of W 18 O 49 nanowires was obtained, and the effect of laser power on the change of their structure was also studied. W 18 O 49 nanowires were first oxidized to tungsten trioxide nanowires under irradiation of a certain laser power, and then the tungsten trioxide nanowires underwent a phase transition from monoclinic to orthorhombic with increasing laser power; this phase transition was reversible on turning down the laser power. Copyright © 2006 John Wiley & Sons, Ltd.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom