Single-crystal elastic properties of aluminum oxynitride (AlON) from brillouin scattering

Journal Article · 18 January 2016 · Journal of the American Ceramic Society

DOI: https://doi.org/10.1111/jace.14065 · OSTI ID:1364618

Satapathy, Sikhanda ^[1]; Ahart, Muhtar ^[2]; Dandekar, Dattatraya ^[3]; Hemley, Russell J. ^[2]; Schuster, Brian ^[3]; Khoma, Petro ^[3]

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1. Army Research Lab., Aberdeen Proving Ground, MD (United States); Carnegie Institution of Washington
2. Carnegie Institution of Washington, Washington, D.C. (United States)
3. Army Research Lab., Aberdeen Proving Ground, MD (United States)

The Brillouin light-scattering technique was used to determine experimentally the three independent elastic constants of cubic aluminum oxynitride at the ambient condition. They are C₁₁=334.8(±1.8) GPa, C₁₂=164.4(± 1.2) GPa, and C₄₄=178.6(± 1.1) GPa. Its bulk modulus is 221.2 GPa. The magnitude of Zener anisotropic ratio is 2.1 similar to other spinels. Here, the anisotropic nature of the material is shown by a large variation in the Young’s modulus and Poisson’s ratio with crystallographic directions. The material was found to be auxetic in certain orientations.

• Research Organization: Carnegie Institution of Washington, Washington, D.C. (United States); Energy Frontier Research Centers (EFRC) (United States). Energy Frontier Research in Extreme Environments (EFree)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• Grant/Contract Number: NA0002006; SC0001057
• OSTI ID: 1364618
• Journal Information: Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 4 Vol. 99; ISSN 0002-7820
• Publisher: American Ceramic SocietyCopyright Statement
• Country of Publication: United States
• Language: English