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

Fingerprint

dioxides
vanadium
insulators
nanoparticles
metals
transmittance
magnetic permeability

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Infrared-wave number-dependent metal-insulator transition in vanadium dioxide nanoparticles. / Lee, Kyu Won; Kweon, Jin Jung; Lee, Cheol Eui; Gedanken, A.; Ganesan, R.

In: Applied Physics Letters, Vol. 96, No. 24, 243111, 14.06.2010.

Research output: Contribution to journalArticle

Lee, Kyu Won ; Kweon, Jin Jung ; Lee, Cheol Eui ; Gedanken, A. ; Ganesan, R. / Infrared-wave number-dependent metal-insulator transition in vanadium dioxide nanoparticles. In: Applied Physics Letters. 2010 ; Vol. 96, No. 24.
@article{1fc0ed933a4d447cb00ef1fc866b4f71,
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",
year = "2010",
month = "6",
day = "14",
doi = "10.1063/1.3454783",
language = "English",
volume = "96",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "24",

}

TY - JOUR

T1 - Infrared-wave number-dependent metal-insulator transition in vanadium dioxide nanoparticles

AU - Lee, Kyu Won

AU - Kweon, Jin Jung

AU - Lee, Cheol Eui

AU - Gedanken, A.

AU - Ganesan, R.

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.

UR - http://www.scopus.com/inward/record.url?scp=77953731811&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77953731811&partnerID=8YFLogxK

U2 - 10.1063/1.3454783

DO - 10.1063/1.3454783

M3 - Article

AN - SCOPUS:77953731811

VL - 96

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 24

M1 - 243111

ER -