Influence of deuterium absorption on structural and magnetic properties of ErFe2

V. Paul-Boncour; C. Giorgetti; G. Wiesinger; A. Percheron-Guégan

doi:10.1016/S0925-8388(02)01233-1

Influence of deuterium absorption on structural and magnetic properties of ErFe₂

V. Paul-Boncour
, C. Giorgetti
, G. Wiesinger
, A. Percheron-Guégan

Research output: Contribution to journal › Conference article › peer-review

Abstract

The structural and magnetic properties of ErFe₂D_x deuterides (1.3≤x≤3.5) were investigated by X-ray diffraction, magnetization measurements, Mössbauer spectroscopy and X-ray magnetic circular dichroism (XMCD). While structural studies revealed the maintenance of the C-15 structure for x<3, ⁵⁷Fe Mössbauer spectroscopy indicates the formation of several different local environments of the Fe-sites upon deuterium absorption. Further deuterium absorption (3.4≤x≤3.6) led to a rhombohedral distortion and to a decrease of the local Fe and Er moments. The XMCD spectra of ErFe₂D_3.4 at the Fe-K edge display a complex behaviour versus temperature, which is attributed to the great influence of the Er neighbours below the compensation temperature. In addition the XMCD signal collapses at both the Er-L_III edge and Fe-K edge when crossing the compensation point.

Original language	English
Pages (from-to)	195-199
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	356-357
DOIs	https://doi.org/10.1016/S0925-8388(02)01233-1
Publication status	Published - 11 Aug 2003
Externally published	Yes
Event	Proceedings of the Eight International Symposium on Metal Hyd (MH 2002) - Annecy, France Duration: 2 Sept 2002 → 6 Sept 2002

Keywords

Hydrogen storage materials
Magnetic measurements
Mössbauer spectroscopy
Synchrotron radiation
X-ray diffraction

Access to Document

10.1016/S0925-8388(02)01233-1

Cite this

@article{d2fb4554969d4ea59c5057fe0ebd7077,

title = "Influence of deuterium absorption on structural and magnetic properties of ErFe2",

abstract = "The structural and magnetic properties of ErFe2Dx deuterides (1.3≤x≤3.5) were investigated by X-ray diffraction, magnetization measurements, M{\"o}ssbauer spectroscopy and X-ray magnetic circular dichroism (XMCD). While structural studies revealed the maintenance of the C-15 structure for x<3, 57Fe M{\"o}ssbauer spectroscopy indicates the formation of several different local environments of the Fe-sites upon deuterium absorption. Further deuterium absorption (3.4≤x≤3.6) led to a rhombohedral distortion and to a decrease of the local Fe and Er moments. The XMCD spectra of ErFe2D3.4 at the Fe-K edge display a complex behaviour versus temperature, which is attributed to the great influence of the Er neighbours below the compensation temperature. In addition the XMCD signal collapses at both the Er-LIII edge and Fe-K edge when crossing the compensation point.",

keywords = "Hydrogen storage materials, Magnetic measurements, M{\"o}ssbauer spectroscopy, Synchrotron radiation, X-ray diffraction",

author = "V. Paul-Boncour and C. Giorgetti and G. Wiesinger and A. Percheron-Gu{\'e}gan",

year = "2003",

month = aug,

day = "11",

doi = "10.1016/S0925-8388(02)01233-1",

language = "English",

volume = "356-357",

pages = "195--199",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

note = "Proceedings of the Eight International Symposium on Metal Hyd (MH 2002) ; Conference date: 02-09-2002 Through 06-09-2002",

}

TY - JOUR

T1 - Influence of deuterium absorption on structural and magnetic properties of ErFe2

AU - Paul-Boncour, V.

AU - Giorgetti, C.

AU - Wiesinger, G.

AU - Percheron-Guégan, A.

PY - 2003/8/11

Y1 - 2003/8/11

N2 - The structural and magnetic properties of ErFe2Dx deuterides (1.3≤x≤3.5) were investigated by X-ray diffraction, magnetization measurements, Mössbauer spectroscopy and X-ray magnetic circular dichroism (XMCD). While structural studies revealed the maintenance of the C-15 structure for x<3, 57Fe Mössbauer spectroscopy indicates the formation of several different local environments of the Fe-sites upon deuterium absorption. Further deuterium absorption (3.4≤x≤3.6) led to a rhombohedral distortion and to a decrease of the local Fe and Er moments. The XMCD spectra of ErFe2D3.4 at the Fe-K edge display a complex behaviour versus temperature, which is attributed to the great influence of the Er neighbours below the compensation temperature. In addition the XMCD signal collapses at both the Er-LIII edge and Fe-K edge when crossing the compensation point.

AB - The structural and magnetic properties of ErFe2Dx deuterides (1.3≤x≤3.5) were investigated by X-ray diffraction, magnetization measurements, Mössbauer spectroscopy and X-ray magnetic circular dichroism (XMCD). While structural studies revealed the maintenance of the C-15 structure for x<3, 57Fe Mössbauer spectroscopy indicates the formation of several different local environments of the Fe-sites upon deuterium absorption. Further deuterium absorption (3.4≤x≤3.6) led to a rhombohedral distortion and to a decrease of the local Fe and Er moments. The XMCD spectra of ErFe2D3.4 at the Fe-K edge display a complex behaviour versus temperature, which is attributed to the great influence of the Er neighbours below the compensation temperature. In addition the XMCD signal collapses at both the Er-LIII edge and Fe-K edge when crossing the compensation point.

KW - Hydrogen storage materials

KW - Magnetic measurements

KW - Mössbauer spectroscopy

KW - Synchrotron radiation

KW - X-ray diffraction

U2 - 10.1016/S0925-8388(02)01233-1

DO - 10.1016/S0925-8388(02)01233-1

M3 - Conference article

AN - SCOPUS:0043065526

SN - 0925-8388

VL - 356-357

SP - 195

EP - 199

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

T2 - Proceedings of the Eight International Symposium on Metal Hyd (MH 2002)

Y2 - 2 September 2002 through 6 September 2002