Single‐Crystal Elastic Properties of Aluminum Oxynitride (AlON) from Brillouin Scattering. Issue 4 (19th January 2016)

• Record Type: Journal Article
• Authors: Satapathy, Sikhanda; Ahart, Muhtar; Dandekar, Dattatraya; Hemley, Russell J.; Schuster, Brian; Khoma, Petro
• Editors: Ching, W.‐Y.
• Is Part Of: Journal of the American Ceramic Society. Volume 99:Issue 4(2016)
• Page Start: 1383
• Page End: 1389
• Publication Date: 2016-01-19
• Subjects: Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.14065
• Languages: English
• ISSNs: 0002-7820

Abstract

Abstract : 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 C 11 = 334.8 ± 1.8 G P a, C 12 = 164.4 ± 1.2 G P a, and C 44 = 178.6 ± 1.1 G P a . Its bulk modulus is 221.2 GPa. The magnitude of Zener anisotropic ratio is 2.1 similar to other spinels. 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.