title: Temperature dependences of piezoelectric, elastic and dielectric constants of L-alanine crystal.
abstract: Temperature changes in the components of piezoelectric, elastic and dielectric tensors were studied in L-alanine crystals in the range 100-300 K. A jumpwise increase in the c(55) component of the elastic stiffness accompanied by maxima in damping of all face-shear modes observed at 199 K in L-alanine crystal were interpreted as a result of changes in the NH(3)(+) vibrations occurring through electron-phonon coupling. All components of the piezoelectric tensor show small anomalies in this temperature range. The components of the electromechanical coupling coefficient determined indicate that L-alanine is a weak piezoelectric.
authors.affiliation: Faculty of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland. zbigtyl@amu.edu.pl
authors.forename: Z
authors.initials: Z
authors.lastname: Tylczyński
authors.forename: A
authors.initials: A
authors.lastname: Sterczyńska
authors.forename: M
authors.initials: M
authors.lastname: Wiesner
mesh_terms: D000409:Alanine / Q000737:chemistry*; D000641:Ammonia / Q000737:chemistry; D003460:Crystallization; D004548:Elasticity; D004553:Electric Conductivity; D055664:Electrochemical Techniques / Q000379:methods*; D033081:Shear Strength; D013696:Temperature; D014732:Vibration
chemical_list: D000641:Ammonia; D000409:Alanine