Anisotropic Electrical Conductivity of Oxygen-Deficient Tungsten Oxide Films with Epitaxially Stabilized 1D Atomic Defect Tunnels.
ACS Appl Mater Interfaces
; 13(5): 6864-6869, 2021 Feb 10.
Article
em En
| MEDLINE
| ID: mdl-33507743
ABSTRACT
Materials having an anisotropic crystal structure often exhibit anisotropy in the electrical conductivity. Compared to complex transition-metal oxides (TMOs), simple TMOs rarely show large anisotropic electrical conductivity due to their simple crystal structure. Here, we focus on the anisotropy in the electrical conductivity of a simple TMO, oxygen-deficient tungsten oxide (WOx) with an anisotropic crystal structure. We fabricated several WOx films by the pulsed laser deposition technique on the lattice-matched (110)-oriented LaAlO3 substrate under a controlled oxygen atmosphere. The crystallographic analyses of the WOx films revealed that highly dense atomic defect tunnels were aligned one-dimensionally (1D) along [001] LaAlO3. The electrical conductivity along the 1D atomic defect tunnels was â¼5 times larger than that across the tunnels. The present approach, introduction of 1D atomic defect tunnels, might be useful to design simple TMOs exhibiting anisotropic electrical conductivity.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
ACS Appl Mater Interfaces
Assunto da revista:
BIOTECNOLOGIA
/
ENGENHARIA BIOMEDICA
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Japão