Accession Number:

AD0296126

Title:

HALL COEFFICIENT OF SUPERCONDUCTING AND NORMAL NB-25 PERCENT, ZR

Descriptive Note:

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

Report Date:

1963-01-09

Pagination or Media Count:

12.0

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 ampsq 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 mamp-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 mamp-sec at 4.2, 77, and 317 K respectively.

Subject Categories:

  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE