Magnetic phase diagram of UNi2Si2 under pressure

O. Syshchenko, S. Khmelevski, M. Diviš, V. Sechovský, F. Honda, G. Oomi, A. V. Andreev, J. Kamarád, J. Šebek, A. A. Menovsky

Research output: Contribution to journalArticle

2 Citations (Scopus)

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 languageEnglish
Pages (from-to)477-482
Number of pages6
JournalPhysica B: Condensed Matter
Volume304
Issue number1-4
DOIs
Publication statusPublished - 2001 Sep 1
Externally publishedYes

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

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    Syshchenko, O., Khmelevski, S., Diviš, M., Sechovský, V., Honda, F., Oomi, G., Andreev, A. V., Kamarád, J., Šebek, J., & Menovsky, A. A. (2001). Magnetic phase diagram of UNi2Si2 under pressure. Physica B: Condensed Matter, 304(1-4), 477-482. https://doi.org/10.1016/S0921-4526(01)00276-9