Infrared-wave number-dependent metal-insulator transition in vanadium dioxide nanoparticles

Kyu Won Lee, Jin Jung Kweon, Cheol Eui Lee, A. Gedanken, R. Ganesan

Research output: Contribution to journalArticle

18 Citations (Scopus)

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 VO2 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.

Original languageEnglish
Article number243111
JournalApplied Physics Letters
Volume96
Issue number24
DOIs
Publication statusPublished - 2010 Jun 14

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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