Electrical Resistivity of Aluminum under Shock Compression

The electrical conductivity of Al2O3 under shock-compression

Sapphire (Al2O3) crystals are used below 100 GPa as anvils and windows in dynamic-compression experiments because of their transparency and high density. Above 100 GPa shock pressures, sapphire becomes opaque and electrically conducting because of shock-induced defects. Such effects prevent temperature and dc conductivity measurements of materials compressed quasi-isentropically. Opacities and ...

Electrical and optical measurements on fused quartz under shock compression

The resistivities of specimens of Si02 (fused quartz) singly and doubly shocked in the i0 to 45 and 27 to 90 GPa range, respectively, demonstrate a marked decrease from values of ~10~'m to ~0.1~'m at single shock pressure of ~40 and double shock pressure of ~74 GPa. The shock-induced polarization profiles also show a sudden change of electrical properties of the material at those pressures. The...

Electrical measurements on fused quartz under shock compression

The resistivities of specimens ofSi02 (fused quartz) singly and doubly shocked in the 10-45 and 27-90 GPa ranges, respectively, demonstrate a marked decrease from values of10-0.1 11-m at a single-shock pressure of -40 and a double-shock pressure of 7 4 G Pa. These states correspond to calculated shock temperatures of3300 and -3600 K, respectively. At shock pressures below 36 GPa the measured re...

Ballistic resistivity in aluminum nanocontacts

A. Hasmy,1 A. J. Pérez-Jiménez,2 J. J. Palacios,2 P. García-Mochales,3 J. L. Costa-Krämer,4 M. Díaz,1 E. Medina,1 and P. A. Serena3 1Centro de Física, IVIC, Apdo. 21827, Caracas 1020A, Venezuela 2Departamento de Física Aplicada, Universidad de Alicante, San Vicente del Raspeig, 03690-Alicante, Spain 3Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049-Madrid, Spain 4Instituto...

ELECTRICAL RESISTIVITY OF NpTe