Browsing by Author "Liu, Ti-Ju"

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Localized Deformation and Fracture Behaviors in InP Single Crystals by Indentation
(2018-12-01)
Chiu, Yi-Jui
;
Jian, Sheng-Rui
;
Liu, Ti-Ju
;
Phuoc Huu Le
;
Juang, Jenh-Yih
The indentation-induced deformation mechanisms in InP(100) single crystals were investigated by using nanoindentation and cross-sectional transmission electron microscopy (XTEM) techniques. The results indicated that there were multiple pop-in events randomly distributed in the loading curves, which were conceived to arise primarily from the dislocation nucleation and propagation activities. An energetic estimation on the number of nanoindentation-induced dislocations associated with pop-in effects is discussed. Furthermore, the fracture patterns were performed by Vickers indentation. The fracture toughness and the fracture energy of InP(100) single crystals were calculated to be around 1.2 MPam(1/2) and 14.1 J/m(2), respectively.