Measurements of the thermophysical properties of V2O5 pellets. (3rd January 2020)
- Record Type:
- Journal Article
- Title:
- Measurements of the thermophysical properties of V2O5 pellets. (3rd January 2020)
- Main Title:
- Measurements of the thermophysical properties of V2O5 pellets
- Authors:
- Kim, Hyunki
Jeong, Soo Yeol
Choi, Yeon Suk
Kim, Sok Won - Abstract:
- The thermal properties of V2 O5 and W0.04 V2 O5 pellets with α-V2 O5 phase were investigated by measuring the specific heat and thermal diffusivity. Near 150°C, the specific heats of both pellets increased remarkably due to the metal-insulator transition (MIT) reported in α-V2 O5 thin films. In thermal diffusivity measurement, neither pellet showed a remarkable change in terms of strong electron-phonon interaction. The thermal diffusivity of the V2 O5 pellet was about 20% larger than that of the W0.04 V2 O5 pellet due to the increase of surface defects of the nanospheres and the boundaries between them. The thermal conductivities of the V2 O5 and W0.04 V2 O5 pellets calculated using thermal diffusivity and specific heat clearly revealed a remarkable change near 150°C. Over the whole temperature range, the thermal conductivity of the V2 O5 pellet was larger than that of W0.04 V2 O5, due to the thermal diffusivity. Above 150°C, the electronic thermal conductivity showed a significant increase in both pellets, which was attributed to the MIT in the V2 O5 and W0.04 V2 O5 pellets, and the transition temperatures (Tc ) of the pellets were 200 and 180°C, respectively.
- Is Part Of:
- International journal of nanotechnology. Volume 16:Number 4/5(2019)
- Journal:
- International journal of nanotechnology
- Issue:
- Volume 16:Number 4/5(2019)
- Issue Display:
- Volume 16, Issue 4/5 (2019)
- Year:
- 2019
- Volume:
- 16
- Issue:
- 4/5
- Issue Sort Value:
- 2019-0016-NaN-0000
- Page Start:
- 228
- Page End:
- 236
- Publication Date:
- 2020-01-03
- Subjects:
- V2O5 -- W004V2O5 -- pellet -- thermal conductivity -- MIT -- metal-insulator transition -- specific heats -- thermal diffusivity
620.505 - Journal URLs:
- http://www.inderscience.com/ijnt ↗
http://www.inderscience.com/ ↗ - Languages:
- English
- ISSNs:
- 1475-7435
- Deposit Type:
- Legaldeposit
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- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - BLDSS-3PM
British Library STI - ELD Digital store - Ingest File:
- 12251.xml