Spin glass behavior in a decagonal quasicrystal Al-Mn-Fe-Ge system

A. Tobo; H. Onodera; Y. Yamaguchi; Y. Yokoyama; R. Note; A. Inoue

doi:10.1023/A:1012228510971

Spin glass behavior in a decagonal quasicrystal Al-Mn-Fe-Ge system

A. Tobo, H. Onodera, Y. Yamaguchi, Y. Yokoyama, R. Note, A. Inoue

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

3 Citations (Scopus)

Abstract

The magnetic behavior of a decagonal quasicrystal Al₄₀Mn₂₅Fe₁₅Ge₂₀ system has been investigated by Mössbauer spectroscopy, magnetization and AC susceptibility measurements. Magnetization measured at low fields as a function of temperature shows a cusp-like peak around 41 K. AC susceptibility also shows a sharp cusp, and the cusp shifts to a higher temperature as the frequency increases. These results strongly suggested that Al₄₀Mn₂₅Fe₁₅Ge₂₀ is a spin glass system with T_g = 41 K. From the temperature dependence of the Mössbauer spectrum, we observed the appearance of a hyperfine field below around 50 K. The temperature is a little higher than the cusp temperature, which is rather usual in spin glass systems.

Original language	English
Pages (from-to)	27-31
Number of pages	5
Journal	Hyperfine Interactions
Volume	133
Issue number	1-4
DOIs	https://doi.org/10.1023/A:1012228510971
Publication status	Published - 2001
Externally published	Yes

Keywords

AlMnFeGe
Magnetic properties
Mössbauer spectroscopy

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics
Condensed Matter Physics
Physical and Theoretical Chemistry

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title = "Spin glass behavior in a decagonal quasicrystal Al-Mn-Fe-Ge system",

abstract = "The magnetic behavior of a decagonal quasicrystal Al40Mn25Fe15Ge20 system has been investigated by M{\"o}ssbauer spectroscopy, magnetization and AC susceptibility measurements. Magnetization measured at low fields as a function of temperature shows a cusp-like peak around 41 K. AC susceptibility also shows a sharp cusp, and the cusp shifts to a higher temperature as the frequency increases. These results strongly suggested that Al40Mn25Fe15Ge20 is a spin glass system with Tg = 41 K. From the temperature dependence of the M{\"o}ssbauer spectrum, we observed the appearance of a hyperfine field below around 50 K. The temperature is a little higher than the cusp temperature, which is rather usual in spin glass systems.",

keywords = "AlMnFeGe, Magnetic properties, M{\"o}ssbauer spectroscopy",

author = "A. Tobo and H. Onodera and Y. Yamaguchi and Y. Yokoyama and R. Note and A. Inoue",

year = "2001",

doi = "10.1023/A:1012228510971",

language = "English",

volume = "133",

pages = "27--31",

journal = "Hyperfine Interaction",

issn = "0304-3843",

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T1 - Spin glass behavior in a decagonal quasicrystal Al-Mn-Fe-Ge system

AU - Tobo, A.

AU - Onodera, H.

AU - Yamaguchi, Y.

AU - Yokoyama, Y.

AU - Note, R.

AU - Inoue, A.

PY - 2001

Y1 - 2001

N2 - The magnetic behavior of a decagonal quasicrystal Al40Mn25Fe15Ge20 system has been investigated by Mössbauer spectroscopy, magnetization and AC susceptibility measurements. Magnetization measured at low fields as a function of temperature shows a cusp-like peak around 41 K. AC susceptibility also shows a sharp cusp, and the cusp shifts to a higher temperature as the frequency increases. These results strongly suggested that Al40Mn25Fe15Ge20 is a spin glass system with Tg = 41 K. From the temperature dependence of the Mössbauer spectrum, we observed the appearance of a hyperfine field below around 50 K. The temperature is a little higher than the cusp temperature, which is rather usual in spin glass systems.

AB - The magnetic behavior of a decagonal quasicrystal Al40Mn25Fe15Ge20 system has been investigated by Mössbauer spectroscopy, magnetization and AC susceptibility measurements. Magnetization measured at low fields as a function of temperature shows a cusp-like peak around 41 K. AC susceptibility also shows a sharp cusp, and the cusp shifts to a higher temperature as the frequency increases. These results strongly suggested that Al40Mn25Fe15Ge20 is a spin glass system with Tg = 41 K. From the temperature dependence of the Mössbauer spectrum, we observed the appearance of a hyperfine field below around 50 K. The temperature is a little higher than the cusp temperature, which is rather usual in spin glass systems.

KW - AlMnFeGe

KW - Magnetic properties

KW - Mössbauer spectroscopy

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Spin glass behavior in a decagonal quasicrystal Al-Mn-Fe-Ge system

Abstract

Keywords

ASJC Scopus subject areas

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