Delocalization of the U 5f magnetic moments in U(In0.6Sn 0.4)3 and UNiSn under high pressure

A. Barla; J. P. Sanchez; A. Aksungur; R. Lengsdorf; J. Plessel; B. P. Doyle; R. Rüffer; M. M. Abd-Elmeguid

doi:10.1088/0953-8984/17/11/015

Delocalization of the U 5f magnetic moments in U(In_0.6Sn _0.4)₃ and UNiSn under high pressure

A. Barla, J. P. Sanchez, A. Aksungur, R. Lengsdorf, J. Plessel, B. P. Doyle, R. Rüffer, M. M. Abd-Elmeguid

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

2 Citations (Scopus)

Abstract

The pressure-temperature dependence of the electronic and magnetic properties of the compounds U(In_1-xSn_x)₃ and UNiSn has been investigated by means of high pressure x-ray diffraction, ¹¹⁹Sn nuclear forward scattering (NFS) of synchrotron radiation and Mössbauer spectroscopy (MS) measurements. We show that pressure has different effects on these systems: while U(In_0.8Sn _0.2)₃ shows some of the typical properties of nearly localized 5f systems, pressure induces the delocalization of the U 5f electrons in U(In_0.6Sn_0.4)₃ and UNiSn with a pressure dependent interplay between RKKY exchange interaction and the consequent collapse of the magnetic order. These results are discussed in terms of hybridization between U 5f electrons and conduction band electrons such as U 6d, Sn/In 5sp and Ni 3d electrons.

Original language	English
Pages (from-to)	S859-S870
Journal	Journal of Physics Condensed Matter
Volume	17
Issue number	11
DOIs	https://doi.org/10.1088/0953-8984/17/11/015
Publication status	Published - 23 Mar 2005
Externally published	Yes

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

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10.1088/0953-8984/17/11/015

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title = "Delocalization of the U 5f magnetic moments in U(In0.6Sn 0.4)3 and UNiSn under high pressure",

abstract = "The pressure-temperature dependence of the electronic and magnetic properties of the compounds U(In1-xSnx)3 and UNiSn has been investigated by means of high pressure x-ray diffraction, 119Sn nuclear forward scattering (NFS) of synchrotron radiation and M{\"o}ssbauer spectroscopy (MS) measurements. We show that pressure has different effects on these systems: while U(In0.8Sn 0.2)3 shows some of the typical properties of nearly localized 5f systems, pressure induces the delocalization of the U 5f electrons in U(In0.6Sn0.4)3 and UNiSn with a pressure dependent interplay between RKKY exchange interaction and the consequent collapse of the magnetic order. These results are discussed in terms of hybridization between U 5f electrons and conduction band electrons such as U 6d, Sn/In 5sp and Ni 3d electrons.",

author = "A. Barla and Sanchez, {J. P.} and A. Aksungur and R. Lengsdorf and J. Plessel and Doyle, {B. P.} and R. R{\"u}ffer and Abd-Elmeguid, {M. M.}",

year = "2005",

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doi = "10.1088/0953-8984/17/11/015",

language = "English",

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pages = "S859--S870",

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TY - JOUR

T1 - Delocalization of the U 5f magnetic moments in U(In0.6Sn 0.4)3 and UNiSn under high pressure

AU - Barla, A.

AU - Sanchez, J. P.

AU - Aksungur, A.

AU - Lengsdorf, R.

AU - Plessel, J.

AU - Doyle, B. P.

AU - Rüffer, R.

AU - Abd-Elmeguid, M. M.

PY - 2005/3/23

Y1 - 2005/3/23

N2 - The pressure-temperature dependence of the electronic and magnetic properties of the compounds U(In1-xSnx)3 and UNiSn has been investigated by means of high pressure x-ray diffraction, 119Sn nuclear forward scattering (NFS) of synchrotron radiation and Mössbauer spectroscopy (MS) measurements. We show that pressure has different effects on these systems: while U(In0.8Sn 0.2)3 shows some of the typical properties of nearly localized 5f systems, pressure induces the delocalization of the U 5f electrons in U(In0.6Sn0.4)3 and UNiSn with a pressure dependent interplay between RKKY exchange interaction and the consequent collapse of the magnetic order. These results are discussed in terms of hybridization between U 5f electrons and conduction band electrons such as U 6d, Sn/In 5sp and Ni 3d electrons.

AB - The pressure-temperature dependence of the electronic and magnetic properties of the compounds U(In1-xSnx)3 and UNiSn has been investigated by means of high pressure x-ray diffraction, 119Sn nuclear forward scattering (NFS) of synchrotron radiation and Mössbauer spectroscopy (MS) measurements. We show that pressure has different effects on these systems: while U(In0.8Sn 0.2)3 shows some of the typical properties of nearly localized 5f systems, pressure induces the delocalization of the U 5f electrons in U(In0.6Sn0.4)3 and UNiSn with a pressure dependent interplay between RKKY exchange interaction and the consequent collapse of the magnetic order. These results are discussed in terms of hybridization between U 5f electrons and conduction band electrons such as U 6d, Sn/In 5sp and Ni 3d electrons.

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U2 - 10.1088/0953-8984/17/11/015

DO - 10.1088/0953-8984/17/11/015

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SN - 0953-8984

VL - 17

SP - S859-S870

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

IS - 11

ER -

Delocalization of the U 5f magnetic moments in U(In_0.6Sn _0.4)₃ and UNiSn under high pressure

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