Metamagnetic transitions in hexagonal La 2Ni 7
Abstract
Magnetization measurements of hexagonal La 2Ni 7 were performed in magnetic fields of up to 15 T. In 54 K<T<66 K, a field-induced metamagnetic transition was found to occur from an antiferromagnetic (AF) state to a ferromagnetic (F) state. At T<54 K, successive metamagnetic transitions occur from an antiferromagnetic state via an intermediate state to a ferromagnetic state. The magnetization processes were successfully analyzed by using Landau-type free energy assuming a F state and two types of AF state.
- Publication:
-
Physica B Condensed Matter
- Pub Date:
- April 2004
- DOI:
- 10.1016/j.physb.2004.01.033
- Bibcode:
- 2004PhyB..346..122T
- Keywords:
-
- Hexagonal La2Ni7;
- Metamagnetic transitions;
- H-T phase diagram;
- Landau-type free energy
