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Title: Complete elastic constants of α−BaB{sub 2}O{sub 4}: Resonant ultrasound spectroscopy versus Schaefer-Bergmann diffraction

We utilized both resonant ultrasound spectroscopy (RUS) and Schaefer-Bergmann diffraction patterns (SBDP) to measure the elastic stiffness coefficients of the trigonal, non-piezo-electric crystal α−BaB{sub 2}O{sub 4}. RUS determines the elastic coefficients of a sample by matching measured resonant frequencies to a model of resonances. SBDP deduces the elastic coefficients by fitting the measured shape of the acousto-optic diffraction pattern to an acoustic slowness surface cross-section. We present our measured elastic coefficients of α−BaB{sub 2}O{sub 4} from both RUS and SBDP experiments.
Authors:
; ;  [1] ;  [2]
  1. Dept. of Electrical and Computer Engineering, University of Colorado, Boulder, CO (United States)
  2. Dept. of Mechanical Engineering, University of Colorado, Boulder, CO (United States)
Publication Date:
OSTI Identifier:
22311324
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1600; Journal Issue: 1; Conference: AIVELA 2014: 11. international conference on vibration measurements by laser and noncontact techniques, Ancona (Italy), 25-27 Jun 2014; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACOUSTICS; BARIUM COMPOUNDS; BORATES; CROSS SECTIONS; CRYSTALS; DIFFRACTION; ELASTICITY; FLEXIBILITY; OPTICS; SPECTROSCOPY; SURFACES; ULTRASONIC WAVES