Observation of coreless edge and mixed dislocations in Mg-doped Al0.03Ga0.97N

D. Cherns; Y. Q. Wang; R. Liu; Fernando Ponce

doi:10.1063/1.1527978

Observation of coreless edge and mixed dislocations in Mg-doped Al_0.03Ga_0.97N

D. Cherns, Y. Q. Wang, R. Liu, Fernando Ponce

Physics

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23 Scopus citations

Abstract

The core structure of threading dislocations in Mg-doped Al_0.03Ga_0.97N thin films was examined using transmission electron microscopy. It was demonstrated that edge and mixed dislocations in Mg-doped Al_0.03Ga_0.97N films can have hollow cores with diameters in the range of 1-5 nm. A model was presented in which hollow core formation is initiated by the segregation and subsequent precipitation of Mg at these dislocation cores.

Original language	English (US)
Pages (from-to)	4541-4543
Number of pages	3
Journal	Applied Physics Letters
Volume	81
Issue number	24
DOIs	https://doi.org/10.1063/1.1527978
State	Published - Dec 9 2002

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Observation of coreless edge and mixed dislocations in Mg-doped Al0.03Ga0.97N",

abstract = "The core structure of threading dislocations in Mg-doped Al0.03Ga0.97N thin films was examined using transmission electron microscopy. It was demonstrated that edge and mixed dislocations in Mg-doped Al0.03Ga0.97N films can have hollow cores with diameters in the range of 1-5 nm. A model was presented in which hollow core formation is initiated by the segregation and subsequent precipitation of Mg at these dislocation cores.",

author = "D. Cherns and Wang, {Y. Q.} and R. Liu and Fernando Ponce",

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AU - Cherns, D.

AU - Wang, Y. Q.

AU - Liu, R.

AU - Ponce, Fernando

PY - 2002/12/9

Y1 - 2002/12/9

N2 - The core structure of threading dislocations in Mg-doped Al0.03Ga0.97N thin films was examined using transmission electron microscopy. It was demonstrated that edge and mixed dislocations in Mg-doped Al0.03Ga0.97N films can have hollow cores with diameters in the range of 1-5 nm. A model was presented in which hollow core formation is initiated by the segregation and subsequent precipitation of Mg at these dislocation cores.

AB - The core structure of threading dislocations in Mg-doped Al0.03Ga0.97N thin films was examined using transmission electron microscopy. It was demonstrated that edge and mixed dislocations in Mg-doped Al0.03Ga0.97N films can have hollow cores with diameters in the range of 1-5 nm. A model was presented in which hollow core formation is initiated by the segregation and subsequent precipitation of Mg at these dislocation cores.

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JO - Applied Physics Letters

JF - Applied Physics Letters

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Observation of coreless edge and mixed dislocations in Mg-doped Al_0.03Ga_0.97N

Abstract

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