Magnetoresistance of Copper-Plated Bismuth Fibers
- 1 June 1965
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 36 (6) , 1973-1975
- https://doi.org/10.1063/1.1714385
Abstract
The magnetoresistance of bismuth fibers has been used in our laboratory for measuring magnetic fields at low temperatures. Fibers 2.2 mm long and 25 μ in diameter are quite sensitive and have a very good spatial resolution. It was found that the magnetic field sensitivity of these fibers can be increased by electrolytic copper plating; there is, however, an optimum amount of copper deposited which gives maximum sensitivity. At 14 kG the sensitivity can be increased by about a factor of three from the no-plating case. Magnetic field sensitivities of 1.4 V/A-kG at 14 kG and 4.2°K have been obtained. It has been observed that the response of the copper-plated fibers is quite linear below 1 or 2 kG and above 4 or 5 kG. The low-field sensitivity is several times greater than the sensitivity at 14 kG.This publication has 5 references indexed in Scilit:
- Size Effects for Conduction in Thin Bismuth CrystalsIBM Journal of Research and Development, 1960
- The Intermediate State of a Hollow Superconducting Tin CylinderPhysical Review B, 1953
- The mean free path of electrons in metalsAdvances in Physics, 1952
- XXVI. The electrical conductivity of bismuth fibres.—I. Magneto resistance and the crystalline structureJournal of Computers in Education, 1949
- Magnetic behaviour of supraconducting tin spheresProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1935