An extremely large magnetic entropy change has been discovered in when subjected to a change in the magnetic field. It exceeds the reversible (with respect to an alternating magnetic field) magnetocaloric effect in any known magnetic material by at least a factor of 2, and it is due to a first order phase transition at 276 K and its unique magnetic field dependence.
- Received 22 November 1996
- Published in the issue dated 9 June 1997
© 1997 The American Physical Society