THE EFFECT OF PRESSURE ON THE FERROMAGNETIC PHASE TRANSITION OF EUO,
Abstract
The compressions of EuO up to 10,000 atm. have been measured at 296 K, 82 K and 4.2 K. The shift in temperature of the ferromagnetic phase transition has been measured as a function of pressure, by measuring the mutual inductance of a coil containing the solid. The transition occurs at about 72 K at 10,000 atm., which is about 5 K higher than the transition at atmospheric pressure. The results tend to substantiate a molecular field model for EuO proposed by McGuire and Shafer (J. Appl. Phys. 35:984, (1964)). An estimate is made of the variation of the exchange interaction parameter with lattice parameter; delta J/delta a = -0.62 K/A, where J refers to interactions between nearest magnetic neighbours. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1965
- Accession Number
- AD0623572
Entities
People
- M. C. Robinson
- Richard Stevenson
Organizations
- McGill University