Anisotropic Calculation of Mechanical Property of GaAs Crystal

Kangjia DONG; Chen JIANG; Shaobin REN; Xiaohu LANG; Rui GAO; Hui YE

doi:10.15541/jim20200507

Journals >Journal of Inorganic Materials >Volume 36 >Issue 6 >Page 645 > Article

Journal of Inorganic Materials
Vol. 36, Issue 6, 645 (2021)

Anisotropic Calculation of Mechanical Property of GaAs Crystal

Kangjia DONG¹, Chen JIANG^1、*, Shaobin REN², Xiaohu LANG², Rui GAO¹, and Hui YE¹

Author Affiliations

¹1. College of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

²2. Shanghai Nanpre Mechanics Co. Ltd., Shanghai 201203, China

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DOI: 10.15541/jim20200507 Cite this Article

Kangjia DONG, Chen JIANG, Shaobin REN, Xiaohu LANG, Rui GAO, Hui YE. Anisotropic Calculation of Mechanical Property of GaAs Crystal[J]. Journal of Inorganic Materials, 2021, 36(6): 645 Copy Citation Text

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1. Structure and main crystal plane of GaAs

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2. Atomic distribution structure of each crystal plane of GaAs

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3. Vector diagram

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4. Elastic modulus of gallium arsenide

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5. Poisson’s ratio of gallium arsenide

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6. Shear modulus of gallium arsenide

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7. Indentation morphologies of gallium arsenide

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$Vickers hardness and fracture toughness of gallium arsenide$

8. Vickers hardness and fracture toughness of gallium arsenide

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Mechanical parameters of GaAs	S₁₁/(×10^-12, Pa^-1)	S₁₂/(×10^-12, Pa^-1)	S₄₄/(×10^-12, Pa^-1)
Value	11.7	3.7	16.8

Table 1. GaAs material parameters^[10]

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Data source	Hardness/GPa	K_IC/(MPa·m^1/2)	Comments
Chen, et al^[7]	5.27-5.45	0.482-0.579	<110> and <100> crystal direction measured by different loads
Xu, et al^[8]	6-10	-	Measured by different loads
Ponraj, et al^[9]	8.2-10.4	-	Measured by different loads
Hjort, et al^[10]	7	0.44	Average value
This work	5.69-6.21	0.30-0.60	Measured by single loads and different crystal orientations

Table 2. Vickers hardness and fracture toughness^[7,8,9,10]

Kangjia DONG, Chen JIANG, Shaobin REN, Xiaohu LANG, Rui GAO, Hui YE. Anisotropic Calculation of Mechanical Property of GaAs Crystal[J]. Journal of Inorganic Materials, 2021, 36(6): 645

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