Characterization of electrodeposited thin layers of magnetic alloys by Mössbauer spectroscopy

C. Licour; A. Gérard; C. Jérôme; L. Rabet; L. Martinot

doi:10.1023/A:1017978618783

Characterization of electrodeposited thin layers of magnetic alloys by Mössbauer spectroscopy

C. Licour, A. Gérard, C. Jérôme, L. Rabet, L. Martinot

Mechanics

Université de Liège

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

Abstract

Rare earth and transition metal alloys are interesting magnetic materials for applications in the field of magnetooptical memories. We describe the preparation of Dy/Fe alloys by electrodeposition using a pulsed galvanostatic process. Samples were characterized by Mössbauer spectroscopy. Thin layers obtained with short electrolysis pulses (0.1 s) give a Mössbauer spectrum analysed as the sum of two subspectra: the first corresponds to a spectrum originating from very small sized particles of Fe and the second is attributed to a Dy/Fe phase. Longer electrolysis pulses (1 s) give samples whose spectrum is also the sum of two subspectra: the first is attributed to metallic Fe with an extended particle-size distribution while the second is attributed to a Fe/Dy alloy. Mössbauer spectroscopy was found useful in determining the best electrolysis parameters leading to domains of uniform magnetization with high coercive fields.

Original language	English
Pages (from-to)	935-940
Number of pages	6
Journal	Journal of Applied Electrochemistry
Volume	31
Issue number	8
DOIs	https://doi.org/10.1023/A:1017978618783
Publication status	Published - Aug 2001

Keywords

Deposition
Magnetic properties
Mössbauer spectroscopy
Rare earths

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title = "Characterization of electrodeposited thin layers of magnetic alloys by M{\"o}ssbauer spectroscopy",

abstract = "Rare earth and transition metal alloys are interesting magnetic materials for applications in the field of magnetooptical memories. We describe the preparation of Dy/Fe alloys by electrodeposition using a pulsed galvanostatic process. Samples were characterized by M{\"o}ssbauer spectroscopy. Thin layers obtained with short electrolysis pulses (0.1 s) give a M{\"o}ssbauer spectrum analysed as the sum of two subspectra: the first corresponds to a spectrum originating from very small sized particles of Fe and the second is attributed to a Dy/Fe phase. Longer electrolysis pulses (1 s) give samples whose spectrum is also the sum of two subspectra: the first is attributed to metallic Fe with an extended particle-size distribution while the second is attributed to a Fe/Dy alloy. M{\"o}ssbauer spectroscopy was found useful in determining the best electrolysis parameters leading to domains of uniform magnetization with high coercive fields.",

keywords = "Deposition, Magnetic properties, M{\"o}ssbauer spectroscopy, Rare earths",

author = "C. Licour and A. G{\'e}rard and C. J{\'e}r{\^o}me and L. Rabet and L. Martinot",

note = "Funding Information: We thank the Inter-University Institute for Nuclear Sciences (IISN) for support of this work.",

year = "2001",

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doi = "10.1023/A:1017978618783",

language = "English",

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T1 - Characterization of electrodeposited thin layers of magnetic alloys by Mössbauer spectroscopy

AU - Licour, C.

AU - Gérard, A.

AU - Jérôme, C.

AU - Rabet, L.

AU - Martinot, L.

N1 - Funding Information: We thank the Inter-University Institute for Nuclear Sciences (IISN) for support of this work.

PY - 2001/8

Y1 - 2001/8

N2 - Rare earth and transition metal alloys are interesting magnetic materials for applications in the field of magnetooptical memories. We describe the preparation of Dy/Fe alloys by electrodeposition using a pulsed galvanostatic process. Samples were characterized by Mössbauer spectroscopy. Thin layers obtained with short electrolysis pulses (0.1 s) give a Mössbauer spectrum analysed as the sum of two subspectra: the first corresponds to a spectrum originating from very small sized particles of Fe and the second is attributed to a Dy/Fe phase. Longer electrolysis pulses (1 s) give samples whose spectrum is also the sum of two subspectra: the first is attributed to metallic Fe with an extended particle-size distribution while the second is attributed to a Fe/Dy alloy. Mössbauer spectroscopy was found useful in determining the best electrolysis parameters leading to domains of uniform magnetization with high coercive fields.

AB - Rare earth and transition metal alloys are interesting magnetic materials for applications in the field of magnetooptical memories. We describe the preparation of Dy/Fe alloys by electrodeposition using a pulsed galvanostatic process. Samples were characterized by Mössbauer spectroscopy. Thin layers obtained with short electrolysis pulses (0.1 s) give a Mössbauer spectrum analysed as the sum of two subspectra: the first corresponds to a spectrum originating from very small sized particles of Fe and the second is attributed to a Dy/Fe phase. Longer electrolysis pulses (1 s) give samples whose spectrum is also the sum of two subspectra: the first is attributed to metallic Fe with an extended particle-size distribution while the second is attributed to a Fe/Dy alloy. Mössbauer spectroscopy was found useful in determining the best electrolysis parameters leading to domains of uniform magnetization with high coercive fields.

KW - Deposition

KW - Magnetic properties

KW - Mössbauer spectroscopy

KW - Rare earths

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DO - 10.1023/A:1017978618783

M3 - Article

AN - SCOPUS:0035417239

SN - 0021-891X

VL - 31

SP - 935

EP - 940

JO - Journal of Applied Electrochemistry

JF - Journal of Applied Electrochemistry

IS - 8

ER -

Characterization of electrodeposited thin layers of magnetic alloys by Mössbauer spectroscopy

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