Related Experiment Video
Updated: Jun 17, 2026
Characterization of Full Set Material Constants and Their Temperature Dependence for Piezoelectric Materials Using Resonant Ultrasound Spectroscopy
Published on: April 27, 2016
Calculation and measurement of terahertz active normal modes in crystalline PETN
Andrew D Burnett1, John Kendrick, John E Cunningham
1School of Electronic and Electrical Engineering, Institute of Microwaves and Photonics, University of Leeds, Leeds, LS2 9JT, UK. A.D.Burnett@leeds.ac.uk
Abstract:
The terahertz frequency spectrum of pentaerythritol tetranitrate (PETN) is calculated using Discover with the COMPASS force field, CASTEP and PWscf. The calculations are compared to each other and to terahertz spectra (0.3-3 THz) of crystalline PETN recorded at 4 K. A number of analysis methods are used to characterise the calculated normal modes.
