Magnetic Properties of the Hf₁₋ₓRₓFe₆Ge₆ (R = Gd and Dy) Compounds

Javier Rubín; Cristina Piquer; Juan S. Bartolomé; Fernande Grandjean

doi:10.1109/TMAG.2008.2002240

Magnetic Properties of the Hf₁₋ₓRₓFe₆Ge₆ (R = Gd and Dy) Compounds

Javier Rubín
, Cristina Piquer
, Juan S. Bartolomé
, Fernande Grandjean

Chemistry

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

Abstract

We present a study of the magnetic properties and the ⁵⁷ Fe Mössbauer spectra of the Hf _1-x Fe ₆ Ge ₆ , R = Gd and Dy, series. The macroscopic magnetic measurements are consistent with the magnetic independence of the R and Fe sublattices. However, the ⁵⁷ Fe Mössbauer study reveals a more complex magnetic behavior. Specifically, below T _t ≈ 100 K a spin reorientation takes place in HfFe ₆ Ge ₆ . The analysis of the corresponding Mössbauer spectra shows that below T _t a fraction of the iron moments is canted from the c-axis. The substitution of Hf by Gd or Dy reduces the fraction of canted iron moments. The hyperfine magnetic fields are found to decrease upon the R = Gd or Dy substitution. This effect can be qualitatively explained as a result of the decrease in the hybridization between the d valence states of the R element with the 3d iron states.

Original language	English
Pages (from-to)	2944-2947
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	44
Issue number	11 PART 2
DOIs	https://doi.org/10.1109/TMAG.2008.2002240 https://doi.org/10.1109/TMAG.2008.2002240
State	Published - Nov 1 2008

ASJC Scopus Subject Areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Keywords

Dysprosium Compounds
Gadolinium
Germanium
Hafnium
Hyperfine Magnetic Fields
Magnetic Behavior
Magnetic Devices
Magnetic Fields
Magnetic Materials
Magnetic Measurements
Magnetic Properties
Molybdenum
Molybdenum Compounds
Spin Reorientation
Ssbauer Spectroscopy
Sub-lattices
Valence State

Disciplines

Chemistry

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10.1109/TMAG.2008.2002240

https://doi.org/10.1109/TMAG.2008.2002240

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@article{918d479ab9424e88887000992f6e2259,

title = "Magnetic Properties of the Hf₁₋ₓRₓFe₆Ge₆ (R = Gd and Dy) Compounds",

abstract = " We present a study of the magnetic properties and the 57 Fe M{\"o}ssbauer spectra of the Hf 1-x Fe 6 Ge 6 , R = Gd and Dy, series. The macroscopic magnetic measurements are consistent with the magnetic independence of the R and Fe sublattices. However, the 57 Fe M{\"o}ssbauer study reveals a more complex magnetic behavior. Specifically, below T t ≈ 100 K a spin reorientation takes place in HfFe 6 Ge 6 . The analysis of the corresponding M{\"o}ssbauer spectra shows that below T t a fraction of the iron moments is canted from the c-axis. The substitution of Hf by Gd or Dy reduces the fraction of canted iron moments. The hyperfine magnetic fields are found to decrease upon the R = Gd or Dy substitution. This effect can be qualitatively explained as a result of the decrease in the hybridization between the d valence states of the R element with the 3d iron states.",

keywords = "Dysprosium Compounds, Gadolinium, Germanium, Hafnium, Hyperfine Magnetic Fields, Magnetic Behavior, Magnetic Devices, Magnetic Fields, Magnetic Materials, Magnetic Measurements, Magnetic Properties, Molybdenum, Molybdenum Compounds, Spin Reorientation, Ssbauer Spectroscopy, Sub-lattices, Valence State",

author = "Javier Rub{\'i}n and Cristina Piquer and Bartolom{\'e}, \{Juan S.\} and Fernande Grandjean",

year = "2008",

month = nov,

day = "1",

doi = "10.1109/TMAG.2008.2002240",

language = "English",

volume = "44",

pages = "2944--2947",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

number = "11 PART 2",

}

TY - JOUR

T1 - Magnetic Properties of the Hf₁₋ₓRₓFe₆Ge₆ (R = Gd and Dy) Compounds

AU - Rubín, Javier

AU - Piquer, Cristina

AU - Bartolomé, Juan S.

AU - Grandjean, Fernande

PY - 2008/11/1

Y1 - 2008/11/1

N2 - We present a study of the magnetic properties and the 57 Fe Mössbauer spectra of the Hf 1-x Fe 6 Ge 6 , R = Gd and Dy, series. The macroscopic magnetic measurements are consistent with the magnetic independence of the R and Fe sublattices. However, the 57 Fe Mössbauer study reveals a more complex magnetic behavior. Specifically, below T t ≈ 100 K a spin reorientation takes place in HfFe 6 Ge 6 . The analysis of the corresponding Mössbauer spectra shows that below T t a fraction of the iron moments is canted from the c-axis. The substitution of Hf by Gd or Dy reduces the fraction of canted iron moments. The hyperfine magnetic fields are found to decrease upon the R = Gd or Dy substitution. This effect can be qualitatively explained as a result of the decrease in the hybridization between the d valence states of the R element with the 3d iron states.

AB - We present a study of the magnetic properties and the 57 Fe Mössbauer spectra of the Hf 1-x Fe 6 Ge 6 , R = Gd and Dy, series. The macroscopic magnetic measurements are consistent with the magnetic independence of the R and Fe sublattices. However, the 57 Fe Mössbauer study reveals a more complex magnetic behavior. Specifically, below T t ≈ 100 K a spin reorientation takes place in HfFe 6 Ge 6 . The analysis of the corresponding Mössbauer spectra shows that below T t a fraction of the iron moments is canted from the c-axis. The substitution of Hf by Gd or Dy reduces the fraction of canted iron moments. The hyperfine magnetic fields are found to decrease upon the R = Gd or Dy substitution. This effect can be qualitatively explained as a result of the decrease in the hybridization between the d valence states of the R element with the 3d iron states.

KW - Dysprosium Compounds

KW - Gadolinium

KW - Germanium

KW - Hafnium

KW - Hyperfine Magnetic Fields

KW - Magnetic Behavior

KW - Magnetic Devices

KW - Magnetic Fields

KW - Magnetic Materials

KW - Magnetic Measurements

KW - Magnetic Properties

KW - Molybdenum

KW - Molybdenum Compounds

KW - Spin Reorientation

KW - Ssbauer Spectroscopy

KW - Sub-lattices

KW - Valence State

UR - https://scholarsmine.mst.edu/chem_facwork/903

UR - https://doi.org/10.1109/TMAG.2008.2002240

U2 - 10.1109/TMAG.2008.2002240

DO - 10.1109/TMAG.2008.2002240

M3 - Article

SN - 0018-9464

VL - 44

SP - 2944

EP - 2947

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 11 PART 2

ER -

Magnetic Properties of the Hf₁₋ₓRₓFe₆Ge₆ (R = Gd and Dy) Compounds

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