Abstract
High-pressure investigations of the ground state properties of the non-Fermi-liquid system -Mössbauer effect, electrical resistance and x-ray diffraction) reveal unusual features that are different from those found in Ce-related systems. We show that the ordered state with a low magnetic moment persists in a very large pressure range up to and is associated with spin fluctuations. At 10 GPa the system undergoes a first-order magnetic phase transition to a high-moment state with and magnetic ordering temperature at 16.5 GPa. A magnetic phase diagram for in the space is suggested.
- Received 21 March 2003
DOI:https://doi.org/10.1103/PhysRevB.67.180403
©2003 American Physical Society