Nanoindentation of Bi2Se3 Thin Films.
Micromachines (Basel)
; 9(10)2018 Oct 14.
Article
en En
| MEDLINE
| ID: mdl-30424451
ABSTRACT
The nanomechanical properties and nanoindentation responses of bismuth selenide (Bi2Se3) thin films are investigated in this study. The Bi2Se3 thin films are deposited on c-plane sapphire substrates using pulsed laser deposition. The microstructural properties of Bi2Se3 thin films are analyzed by means of X-ray diffraction (XRD). The XRD results indicated that Bi2Se3 thin films are exhibited the hexagonal crystal structure with a c-axis preferred growth orientation. Nanoindentation results showed the multiple "pop-ins" displayed in the loading segments of the load-displacement curves, suggesting that the deformation mechanisms in the hexagonal-structured Bi2Se3 films might have been governed by the nucleation and propagation of dislocations. Further, an energetic estimation of nanoindentation-induced dislocation associated with the observed pop-in effects was made using the classical dislocation theory.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Micromachines (Basel)
Año:
2018
Tipo del documento:
Article
País de afiliación:
Taiwán
Pais de publicación:
CH
/
SUIZA
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SUÍÇA
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SWITZERLAND