Magnetism of californium metal
Abstract
Magnetic susceptibility was measured on samples of californium-249 metal having the dhcp crystal structure. At temperatures between 100K and 300K and at fields up to 50 kilogauss, the samples exhibit Curie-Weiss behavior with 3 samples giving a magnetic moment per atom of (MU)/sub eff/ = 10.6 + or - 0.2 (MU)/sub B/ and paramagnetic Weiss temperatures, theta/sub p/, in the range of -2K to -41K. These values of (MU)/sub eff/ are in good agreement with the value expected (10.62(MU)/sub B/) for a free ion 5f(9) configuration based on an L-S coupling scheme and Hund's Rule. A fourth sample gives the values (MU)/sub eff/ = 9.7 + or - 0.2(MU)/sub B/ and theta/sub p/ = -41K. At low temperatures the samples exhibit an ordered magnetic transition to a state with a saturated moment of 6.1 (MU)/sub B//atom when extrapolated to infinitely high field. The low temperature ordered phase exists at temperatures below T/sub c/ = 51 + or - 2K as determined from constant magnetization plots.
- Publication:
-
Presented at the EPS Top. Conf. on Electronic Structure and Properties of Rare Earth and Actinide Intermetallics
- Pub Date:
- 1984
- Bibcode:
- 1984espr.conf.....N
- Keywords:
-
- Californium Isotopes;
- Curie-Weiss Law;
- Magnetic Permeability;
- Metal Crystals;
- Coupling;
- Crystal Structure;
- Magnetic Induction;
- Magnetic Moments;
- Temperature;
- Physics (General)