HALL COEFFICIENT OF SUPERCONDUCTING AND NORMAL NB-25 PERCENT, ZR
Abstract
Hall-coefficient measurements were made on coldroll Nb-25 percent Zr in the zero-resistance mixed state at 4.2 K and in the normal state at 4.2, 77, and 317 K. With sample current densities from 2000 to 10,000 amp/sq cm in fields of 1 and 9 kilogauss, no Hall voltage for the superconducting s mple could be observed with equipment capable of detecting voltages as small as 10 to the -9th power volt. An upper limit of the superconducting Hall coefficient is therefore calculated to be 1 x 10 to the -15th power cu m/amp-sec. The values of the Hall coefficient for Nb-25% Zr in the normal state are found to be 1.14 x 10 to the -10th power cu m, 1.05 x 10 to the -10th power cu m, and 0. 84 x 10 to the -10th power cu m/amp-sec at 4.2, 77, and 317 K respectively.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 09, 1963
- Accession Number
- AD0296126
Entities
People
- A. I. Schindler
- D. J. Gillespie
Organizations
- United States Naval Research Laboratory