Abstract
We present the temperature and magnetic-field dependencies of the c-axis magnetization of a UCoAl single crystal under various uniaxial pressures exerted along the c-axis. The main result obtained is the uniaxial-pressure-induced reduction of the critical field of the metamagnetic transition followed by the formation of ferromagnetism at higher uniaxial-pressures. These and other associated results are discussed in comparison with corresponding data obtained by applying hydrostatic pressure on the same material. A scenario considering a variation of the anisotropic 5f-ligand hybridization and its consequences induced by the two different types of applied pressure is an important base for the discussion. The pressure-induced variations of the 5f-3d hybridization within the basal plane of the ZrNiAl-type hexagonal structure seem to be the underlying aspect of the evolution of the magnetism in UCoAl.
Original language | English |
---|---|
Pages (from-to) | 160-166 |
Number of pages | 7 |
Journal | Physica B: Condensed Matter |
Volume | 334 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 2003 |
Externally published | Yes |
Keywords
- Ferromagnetism
- Itinerant-electron metamagnetism
- Magnetic properties
- UCoAl
- Uniaxial pressure
- Uranium intermetallics
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering