Abstract
The influence of combined application of external hydrostatic pressure and a magnetic field parallel to the c-axis on the magnetic phases in UNi2Si2 was studied by measuring electrical-resistivity anomalies related to magnetic phase transitions. As a result, the pressure evolution of the B-T magnetic phase diagram is presented. Both the magnetic field and the pressure promote the ground-state uncompensated antiferromagnetic phase at the expense of the AF-I phase, which exists at higher temperatures. The value of the critical field for suppression of the AF-I phase becomes considerably reduced with increasing pressure. The applicability of the mean-field approach within the axial Ising model for explaining pressure effects on magnetic phase transitions is discussed.
Original language | English |
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Pages (from-to) | 477-482 |
Number of pages | 6 |
Journal | Physica B: Condensed Matter |
Volume | 304 |
Issue number | 1-4 |
DOIs | |
Publication status | Published - 2001 Sep |
Externally published | Yes |
Keywords
- Antiferromagnetism
- Axial Ising model
- Electrical resistivity
- Magnetic phase diagram
- Pressure effects on magnetic phases
- U intermetallics
- UNiSi
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering