Complete elastic constants of α-BaB2O4: Schaefer-Bergmann acousto-optic diffraction and resonant ultrasound
Jonathan B Pfeiffer1, Kelvin H Wagner1, Yaniv Kaufman1
1Department of Electrical and Computer Engineering, University of Colorado, Boulder, Colorado 80309, USA.
Abstract:
Both Schaefer-Bergmann diffraction and resonant ultrasound spectroscopy were used to measure the six independent elastic-stiffness coefficients of the trigonal, non-piezoelectric crystal α-BaB2O4. The two measurement sets resulted in a root-mean-square variance of 1.2%. This paper provides a detailed analysis of the two different measurement techniques and discusses the similarities and differences.
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