Magnetic properties of the UCo1-xTxAl solid solutions (T=Rh and Ir)

A. V. Andreev; I. K. Kozlovskaya; N. V. Mushnikov; T. Goto; V. Sechovský; Y. Homma; Y. Shiokawa

doi:10.1016/S0925-8388(98)00959-1

Magnetic properties of the UCo_1-xT_xAl solid solutions (T=Rh and Ir)

A. V. Andreev, I. K. Kozlovskaya, N. V. Mushnikov, T. Goto, V. Sechovský, Y. Homma, Y. Shiokawa

IMR - Materials Processing and Characterization Division

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

19 Citations (Scopus)

Abstract

Results of crystal-structure and magnetic studies of solid solutions between a 5f-band metamagnet UCoAl and ferromagnets URhAl and UIrAl are reported. The UCo_1-xRh_xAl system exhibits a continuous solubility with a monotonous dependence of lattice parameters. For the UCo_1-xIr_xAl compounds we observe this behaviour only for concentrations close to parent compounds, i.e. at x≤0.2 and x≥0.8, leaving the alloys with intermediate concentrations structurally heterogeneous. In the common solubility region lattice parameters in both systems are nearly identical. Also in magnetism, Rh and Ir substitutions for Co yield analogous effects. Ferromagnetism is stabilised for x>0.1 and the Curie temperature and the spontaneous moment exhibits qualitatively similar concentration dependence. These results imply similar evolution of electronic structure involving variations of the 5f-ligand hybridization due to Rh and Ir substitutions.

Original language	English
Pages (from-to)	77-81
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	284
Issue number	1-2
DOIs	https://doi.org/10.1016/S0925-8388(98)00959-1
Publication status	Published - 1999

Keywords

Metamagnetism
UCoAl
Uranium intermetallics

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10.1016/S0925-8388(98)00959-1

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title = "Magnetic properties of the UCo1-xTxAl solid solutions (T=Rh and Ir)",

abstract = "Results of crystal-structure and magnetic studies of solid solutions between a 5f-band metamagnet UCoAl and ferromagnets URhAl and UIrAl are reported. The UCo1-xRhxAl system exhibits a continuous solubility with a monotonous dependence of lattice parameters. For the UCo1-xIrxAl compounds we observe this behaviour only for concentrations close to parent compounds, i.e. at x≤0.2 and x≥0.8, leaving the alloys with intermediate concentrations structurally heterogeneous. In the common solubility region lattice parameters in both systems are nearly identical. Also in magnetism, Rh and Ir substitutions for Co yield analogous effects. Ferromagnetism is stabilised for x>0.1 and the Curie temperature and the spontaneous moment exhibits qualitatively similar concentration dependence. These results imply similar evolution of electronic structure involving variations of the 5f-ligand hybridization due to Rh and Ir substitutions.",

keywords = "Metamagnetism, UCoAl, Uranium intermetallics",

author = "Andreev, {A. V.} and Kozlovskaya, {I. K.} and Mushnikov, {N. V.} and T. Goto and V. Sechovsk{\'y} and Y. Homma and Y. Shiokawa",

note = "Funding Information: The work is a part of the research program of the Joint Laboratory for Magnetic Studies of the Charles University and the Academy of Sciences of the Czech Republic. It was financially supported by the Grant Agency of the Academy of Sciences of the Czech Republic (grant #A1010614) and the Grant Agency of the Charles University (grant #40/97). The stay of N.V.M. at ISSP and A.V.A. at IMR was supported by the Ministry of Education, Science and Culture of Japan.",

year = "1999",

doi = "10.1016/S0925-8388(98)00959-1",

language = "English",

volume = "284",

pages = "77--81",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

number = "1-2",

}

TY - JOUR

T1 - Magnetic properties of the UCo1-xTxAl solid solutions (T=Rh and Ir)

AU - Andreev, A. V.

AU - Kozlovskaya, I. K.

AU - Mushnikov, N. V.

AU - Goto, T.

AU - Sechovský, V.

AU - Homma, Y.

AU - Shiokawa, Y.

N1 - Funding Information: The work is a part of the research program of the Joint Laboratory for Magnetic Studies of the Charles University and the Academy of Sciences of the Czech Republic. It was financially supported by the Grant Agency of the Academy of Sciences of the Czech Republic (grant #A1010614) and the Grant Agency of the Charles University (grant #40/97). The stay of N.V.M. at ISSP and A.V.A. at IMR was supported by the Ministry of Education, Science and Culture of Japan.

PY - 1999

Y1 - 1999

N2 - Results of crystal-structure and magnetic studies of solid solutions between a 5f-band metamagnet UCoAl and ferromagnets URhAl and UIrAl are reported. The UCo1-xRhxAl system exhibits a continuous solubility with a monotonous dependence of lattice parameters. For the UCo1-xIrxAl compounds we observe this behaviour only for concentrations close to parent compounds, i.e. at x≤0.2 and x≥0.8, leaving the alloys with intermediate concentrations structurally heterogeneous. In the common solubility region lattice parameters in both systems are nearly identical. Also in magnetism, Rh and Ir substitutions for Co yield analogous effects. Ferromagnetism is stabilised for x>0.1 and the Curie temperature and the spontaneous moment exhibits qualitatively similar concentration dependence. These results imply similar evolution of electronic structure involving variations of the 5f-ligand hybridization due to Rh and Ir substitutions.

AB - Results of crystal-structure and magnetic studies of solid solutions between a 5f-band metamagnet UCoAl and ferromagnets URhAl and UIrAl are reported. The UCo1-xRhxAl system exhibits a continuous solubility with a monotonous dependence of lattice parameters. For the UCo1-xIrxAl compounds we observe this behaviour only for concentrations close to parent compounds, i.e. at x≤0.2 and x≥0.8, leaving the alloys with intermediate concentrations structurally heterogeneous. In the common solubility region lattice parameters in both systems are nearly identical. Also in magnetism, Rh and Ir substitutions for Co yield analogous effects. Ferromagnetism is stabilised for x>0.1 and the Curie temperature and the spontaneous moment exhibits qualitatively similar concentration dependence. These results imply similar evolution of electronic structure involving variations of the 5f-ligand hybridization due to Rh and Ir substitutions.

KW - Metamagnetism

KW - UCoAl

KW - Uranium intermetallics

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ER -

Magnetic properties of the UCo_1-xT_xAl solid solutions (T=Rh and Ir)

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