Abstract
Measurements of have been made along the melting curve near an anomaly at mK. It is found that the solid- entropy decreases by 80% in an interval of 100 μK at . This is attributed to onset of nuclear magnetic order.
- Received 11 March 1974
DOI:https://doi.org/10.1103/PhysRevLett.32.927
©1974 American Physical Society