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

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

doi:10.1063/1.3454783

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

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

Department of Physics

Research output: Contribution to journal › Article › peer-review

21 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 language	English
Article number	243111
Journal	Applied Physics Letters
Volume	96
Issue number	24
DOIs	https://doi.org/10.1063/1.3454783
Publication status	Published - 2010 Jun 14

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Infrared-wave number-dependent metal-insulator transition in vanadium dioxide nanoparticles",

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.",

author = "Lee, {Kyu Won} and Kweon, {Jin Jung} and Lee, {Cheol Eui} and A. Gedanken and R. Ganesan",

note = "Funding Information: This work was supported by the Korea Ministry of Education, Science, and Technology (NRL Program R0A-2008-000-20066-0 and Project No. 20090082672) and by the Seoul Research and Business Development Program (Grant No. 10583). The measurements at the Korean Basic Science Institute (KBSI) are acknowledged.",

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AU - Lee, Kyu Won

AU - Kweon, Jin Jung

AU - Lee, Cheol Eui

AU - Gedanken, A.

AU - Ganesan, R.

N1 - Funding Information: This work was supported by the Korea Ministry of Education, Science, and Technology (NRL Program R0A-2008-000-20066-0 and Project No. 20090082672) and by the Seoul Research and Business Development Program (Grant No. 10583). The measurements at the Korean Basic Science Institute (KBSI) are acknowledged.

PY - 2010/6/14

Y1 - 2010/6/14

N2 - 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.

AB - 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.

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JO - Applied Physics Letters

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

Abstract

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