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 Chemistry

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

23 Scopus citations

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
State	Published - 14 Jun 2010

Bibliographical 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.

Funding

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.

Funders	Funder number
Seoul Research and Business Development Program	10583
U.S. Naval Research Laboratory	R0A-2008-000-20066-0, 20090082672
Ministry of Education, Science and Technology

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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.",

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AU - Ganesan, R.

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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.

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

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