ICIFUAS 11
Eleventh International Conference on Internal Friction and Ultrasonic Attenuation in Solids

J. Phys. IV France 06 (1996) C8-89-C8-92
DOI: 10.1051/jp4:1996817

Activation Parameters of the Zener Peak in Cu-Li Alloys Produced by Electrodeposition

O.A. Lambri^{1, 2}, A. V. Morón-Alcain³, E.D. Bulejes³, A. Penaloza⁴ and M. Ortiz<sup>4

1</sup>  Universidad Nacional de Rosario, Departamento de Física, Avda. Pellegrini 250, 2000 Rosario, Argentina
²  Departamento de Física de la Materia Condensada, Facultad de Ciencias, Universidad del País Vasco, Apdo. 644, 48080 Bilbao, Spain
³  Laboratorio de Espectroscopía Mecánico Dinámica, Instituto de Física Rosario (IFIR-CONICET-UNR), Avda. 27 de febrero 210 bis, 2000 Rosario, Argentina
⁴  Instituto de Física, Universidad Católica de Valparaíso, Avda. Brasil 2950, Valparaíso, Chile

Abstract
Copper-lithium alloys were produced by electrodeposition. They show a Zener peak at 650 K (at 0.2 s^-1) which appears overlapped with the low and intermediate temperature grain boundary damping peaks of copper and also with the phase transition peak related to Cu-18 at% Li crystals. In this work the activation energy, H, and the pre-exponential factor τo were calculated. Those were H = ( 160 ± 4) KJ/mol and τo = 2 x 10 ^{(-14 ± 1)} (s).

© EDP Sciences 1996