INFLUENCE OF THE INTERNAL FIELD ON THE RESIDUAL RESISTANCE OF VERY PURE IRON,
Abstract
It is shown that the field B = 22 kG which exists in each weiss domain even in the absence of an applied field should cause certain anomalies in the residual resistance of very pure iron. The residual resistance in zero applied field is no longer proportional to impurity concentration. It may even have a minimum as a function of impurity concentration. This explains why the resistivity ratio of samples of zone-refined iron is usually found to be no higher than 200 or 300. The same internal field is also the cause of the resistance decrease in a small longitudinal field, observed in very pure iron and nickel at low temperature. A decrease is expected in a small transverse field if the sample is very slightly misoriented. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 15, 1964
- Accession Number
- AD0451401
Entities
People
- A. R. De Vroomen
- Lukas Berger
Organizations
- Carnegie Institute of Technology