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

doi:10.1016/S0921-4526(01)00276-9

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 journal › Article

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 language	English
Pages (from-to)	477-482
Number of pages	6
Journal	Physica B: Condensed Matter
Volume	304
Issue number	1-4
DOIs	https://doi.org/10.1016/S0921-4526(01)00276-9
Publication status	Published - 2001 Sep 1
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

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10.1016/S0921-4526(01)00276-9

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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

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title = "Magnetic phase diagram of UNi2Si2 under pressure",

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.",

keywords = "Antiferromagnetism, Axial Ising model, Electrical resistivity, Magnetic phase diagram, Pressure effects on magnetic phases, U intermetallics, UNiSi",

author = "O. Syshchenko and S. Khmelevski and M. Divi{\v s} and V. Sechovsk{\'y} and F. Honda and G. Oomi and Andreev, {A. V.} and J. Kamar{\'a}d and J. {\v S}ebek and Menovsky, {A. A.}",

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T1 - Magnetic phase diagram of UNi2Si2 under pressure

AU - Syshchenko, O.

AU - Khmelevski, S.

AU - Diviš, M.

AU - Sechovský, V.

AU - Honda, F.

AU - Oomi, G.

AU - Andreev, A. V.

AU - Kamarád, J.

AU - Šebek, J.

AU - Menovsky, A. A.

PY - 2001/9/1

Y1 - 2001/9/1

N2 - 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.

AB - 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.

KW - Antiferromagnetism

KW - Axial Ising model

KW - Electrical resistivity

KW - Magnetic phase diagram

KW - Pressure effects on magnetic phases

KW - U intermetallics

KW - UNiSi

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