EFFECTS OF PRESSURE ON MAGNETIC INTERACTIONS.
Abstract
A hydrostatic-pressure furnace system was designed, constructed, and assembled, and then tested at pressures up to about 10 kb. With this system, initial measurements were made at various fixed pressures of the critical temperature for the abrupt antiferromagnetic-ferromagnetic transition in the ordered alloy FeRh. The critical temperature, which is marked by a large sudden change in resistivity, was observed to increase rapidly with increased compression. This pressure dependence was then used quantitatively in evaluating the entropy change associated with the transition. The value thus obtained for the change in entropy agrees fairly closely with that recently deduced from the measured variation in critical temperature with applied magnetic field. Some discrepancy does exist, however, between these results and those previously derived form similar measurements. A fuller account of the pressure experiments with FeRh is given.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1965
- Accession Number
- AD0625486
Entities
People
- C. R. Morgan
- J. S. Kouvel
Organizations
- General Electric