Magnetism in UPtAl under high pressure

Fuminori Honda; T. Eto; G. Oomi; V. Sechovský; A. V. Andreev; N. Takeshita; N. Môri

doi:10.1023/A:1015459401263

Magnetism in UPtAl under high pressure

Fuminori Honda, T. Eto, G. Oomi, V. Sechovský, A. V. Andreev, N. Takeshita, N. Môri

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

UPtAl exhibits ferromagnetic ordering (T_C = 42.5 K) of uranium 5f-electron moments. The magnetic ordering transition is accompanied by an electrical-resistivity (ρ) anomaly at Curie temperature (T_C). We report on resistivity measurements performed in a wide temperature range on a UPtAl single crystal under hydrostatic pressures p ≤8 GPa. The initial increase of T_C with p becomes gradually reduced for p > 2 GPa. The maximum T_C value is reached between 4 and 6 GPa that is followed by a decrease of T_C beyond 6 GPa. The latter result is attributed to the approaching collapse of U 5f moment ferromagnetism.

Original language	English
Pages (from-to)	263-266
Number of pages	4
Journal	Czechoslovak Journal of Physics
Volume	52
Issue number	2
DOIs	https://doi.org/10.1023/A:1015459401263
Publication status	Published - 2002 Feb 1
Externally published	Yes

Keywords

Electrical resistivity
High pressure
UPtAl

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1023/A:1015459401263

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title = "Magnetism in UPtAl under high pressure",

abstract = "UPtAl exhibits ferromagnetic ordering (TC = 42.5 K) of uranium 5f-electron moments. The magnetic ordering transition is accompanied by an electrical-resistivity (ρ) anomaly at Curie temperature (TC). We report on resistivity measurements performed in a wide temperature range on a UPtAl single crystal under hydrostatic pressures p ≤8 GPa. The initial increase of TC with p becomes gradually reduced for p > 2 GPa. The maximum TC value is reached between 4 and 6 GPa that is followed by a decrease of TC beyond 6 GPa. The latter result is attributed to the approaching collapse of U 5f moment ferromagnetism.",

keywords = "Electrical resistivity, High pressure, UPtAl",

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T1 - Magnetism in UPtAl under high pressure

AU - Honda, Fuminori

AU - Eto, T.

AU - Oomi, G.

AU - Sechovský, V.

AU - Andreev, A. V.

AU - Takeshita, N.

AU - Môri, N.

PY - 2002/2/1

Y1 - 2002/2/1

N2 - UPtAl exhibits ferromagnetic ordering (TC = 42.5 K) of uranium 5f-electron moments. The magnetic ordering transition is accompanied by an electrical-resistivity (ρ) anomaly at Curie temperature (TC). We report on resistivity measurements performed in a wide temperature range on a UPtAl single crystal under hydrostatic pressures p ≤8 GPa. The initial increase of TC with p becomes gradually reduced for p > 2 GPa. The maximum TC value is reached between 4 and 6 GPa that is followed by a decrease of TC beyond 6 GPa. The latter result is attributed to the approaching collapse of U 5f moment ferromagnetism.

AB - UPtAl exhibits ferromagnetic ordering (TC = 42.5 K) of uranium 5f-electron moments. The magnetic ordering transition is accompanied by an electrical-resistivity (ρ) anomaly at Curie temperature (TC). We report on resistivity measurements performed in a wide temperature range on a UPtAl single crystal under hydrostatic pressures p ≤8 GPa. The initial increase of TC with p becomes gradually reduced for p > 2 GPa. The maximum TC value is reached between 4 and 6 GPa that is followed by a decrease of TC beyond 6 GPa. The latter result is attributed to the approaching collapse of U 5f moment ferromagnetism.

KW - Electrical resistivity

KW - High pressure

KW - UPtAl

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Magnetism in UPtAl under high pressure

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