Crystal structure of Alo.5G.0.5As Based on the zincblende crystal structure for GaAs, sketch the structure of Alo.sGao.5As. The lattice constant for Alo.sGao.5As is a = 5.653 Å. (a) Calculate the atomic density per unit volume for Alo.5Gao.5As. (b) What is the atomic density per unit area on the (100) and (110) planes? (c) The atomic radii for Al, Ga, and As are, respectively, 1.25 Å, 1.30 Å, and 1.15 Å. Using the hard-sphere model, estimate the lattice constant for Alo.5Gao,5As and compare the result with the value given above.
Crystal structure of Alo.5G.0.5As Based on the zincblende crystal structure for GaAs, sketch the structure of Alo.sGao.5As. The lattice constant for Alo.sGao.5As is a = 5.653 Å. (a) Calculate the atomic density per unit volume for Alo.5Gao.5As. (b) What is the atomic density per unit area on the (100) and (110) planes? (c) The atomic radii for Al, Ga, and As are, respectively, 1.25 Å, 1.30 Å, and 1.15 Å. Using the hard-sphere model, estimate the lattice constant for Alo.5Gao,5As and compare the result with the value given above.
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter9: Liquids, Solids, And Materials
Section: Chapter Questions
Problem 88QRT
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![Crystal structure of Alo.5Gao.5AS
Based on the zincblende crystal structure for GaAs, sketch the structure of Alo.sGao.5As.
The lattice constant for Alo.sGao.5As is a = 5.653 Å.
(a) Calculate the atomic density per unit volume for Alo.5Gao.5As.
(b) What is the atomic density per unit area on the (100) and (110) planes?
(c) The atomic radii for Al, Ga, and As are, respectively, 1.25 Å, 1.30 Å, and 1.15 Å. Using
the hard-sphere model, estimate the lattice constant for Alo.5GA0.5As and compare the result
with the value given above.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd07e8233-789e-4760-ba71-e70869af7b54%2Fbaece6f0-8c4c-41d8-a9a7-0ae6602795d0%2Fb8ld47b_processed.png&w=3840&q=75)
Transcribed Image Text:Crystal structure of Alo.5Gao.5AS
Based on the zincblende crystal structure for GaAs, sketch the structure of Alo.sGao.5As.
The lattice constant for Alo.sGao.5As is a = 5.653 Å.
(a) Calculate the atomic density per unit volume for Alo.5Gao.5As.
(b) What is the atomic density per unit area on the (100) and (110) planes?
(c) The atomic radii for Al, Ga, and As are, respectively, 1.25 Å, 1.30 Å, and 1.15 Å. Using
the hard-sphere model, estimate the lattice constant for Alo.5GA0.5As and compare the result
with the value given above.
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