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Infrared-wave number-dependent metal-insulator transition in vanadium dioxide nanoparticles
- Issue Date
- 14-6월-2010
- Publisher
- AMER INST PHYSICS
- Keywords
- infrared spectra; magnetic susceptibility; metal-insulator transition; nanoparticles; size effect; vanadium compounds
- Citation
- APPLIED PHYSICS LETTERS, v.96, no.24
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED PHYSICS LETTERS
- Volume
- 96
- Number
- 24
- ISSN
- 0003-6951
- Abstract
- We have studied the metal-insulator transition (MIT) taking place at 340 K in vanadium dioxide nanoparticles. A peculiar nanosize effect on the 10-nm-sized VO(2) nanoparticles is reported. While the infrared transmittance at high wave numbers displayed a broad transition behavior, the magnetic susceptibility and infrared transmittance at low wave numbers showed a sharp first-order MIT. Our results suggest that the size effect on the MIT is due to the surface region while the core region undergoes the same MIT as that in the bulk. (C) 2010 American Institute of Physics. [doi:10.1063/1.3454783]
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Collections - College of Science > Department of Physics > 1. Journal Articles
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