Evidence of a magnetic glass state in the magnetocaloric material Gd5Ge4
Abstract
We demonstrate the kinetic arrest of the first-order phase transition from the high-temperature antiferromagnetic state to the ferromagnetic ground state in zero and low applied magnetic fields, occurring within the experimental time scale in the magnetocaloric material Gd5Ge4 . A magnetization study clearly reveals glasslike dynamics in the low-temperature antiferromagnetically ordered state. The observation of a glasslike magnetic state is unusual, but we expect that a similar phenomenon should exist in other magnetic systems.
- Publication:
-
Physical Review B
- Pub Date:
- July 2006
- DOI:
- 10.1103/PhysRevB.74.012403
- Bibcode:
- 2006PhRvB..74a2403R
- Keywords:
-
- 75.30.Kz;
- Magnetic phase boundaries