Elastic and magnetostrictive properties of Tb6Fe 1-xCoxBi2 (0 ≤ x ≤ 0.375)

Michael R. Koehler; Lin Jia; David McCarthy; Michael A. McGuire; Veerle Keppens

doi:10.1063/1.3549613

Elastic and magnetostrictive properties of Tb₆Fe _1-xCo_xBi₂ (0 ≤ x ≤ 0.375)

Michael R. Koehler, Lin Jia, David McCarthy, Michael A. McGuire, Veerle Keppens

Correlated Electron Materials

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2 Scopus citations

Abstract

Elastic moduli and magnetostriction data are reported for polycrystalline Tb₆Fe_1-xCo_xBi₂ (0 ≤ x ≤ 0.375). The elastic moduli c₁₁ and c₄₄ have been measured as a function of temperature (5-300 K) and magnetic field (0-5 T), and reflect the ferromagnetic transition observed in these materials around 250 K. A remarkable elastic softening, which is partially suppressed upon application of a magnetic field, is observed at low temperatures and is believed to be linked to a structural transition that takes place in the Co-doped samples. The soft elastic moduli lead to large magnetostriction below 50 K, reaching a value of 700 ppm at 20 kOe for Tb₆Fe_0.75Co_0.25Bi ₂.

Original language	English
Article number	07A918
Journal	Journal of Applied Physics
Volume	109
Issue number	7
DOIs	https://doi.org/10.1063/1.3549613
State	Published - Apr 1 2011

Funding

The authors wish to thank M. Rotter for assistance with the magnetostriction measurements. Work at The University of Tennessee is supported by DOD DEPSCoR Grant No. N00014-08-1-0783. Work at Oak Ridge National Laboratory was sponsored by the Materials Sciences and Engineering Division, Office of Basic Energy Sciences, U.S. Department of Energy.

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title = "Elastic and magnetostrictive properties of Tb6Fe 1-xCoxBi2 (0 ≤ x ≤ 0.375)",

abstract = "Elastic moduli and magnetostriction data are reported for polycrystalline Tb6Fe1-xCoxBi2 (0 ≤ x ≤ 0.375). The elastic moduli c11 and c44 have been measured as a function of temperature (5-300 K) and magnetic field (0-5 T), and reflect the ferromagnetic transition observed in these materials around 250 K. A remarkable elastic softening, which is partially suppressed upon application of a magnetic field, is observed at low temperatures and is believed to be linked to a structural transition that takes place in the Co-doped samples. The soft elastic moduli lead to large magnetostriction below 50 K, reaching a value of 700 ppm at 20 kOe for Tb6Fe0.75Co0.25Bi 2.",

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AU - Koehler, Michael R.

AU - Jia, Lin

AU - McCarthy, David

AU - McGuire, Michael A.

AU - Keppens, Veerle

PY - 2011/4/1

Y1 - 2011/4/1

N2 - Elastic moduli and magnetostriction data are reported for polycrystalline Tb6Fe1-xCoxBi2 (0 ≤ x ≤ 0.375). The elastic moduli c11 and c44 have been measured as a function of temperature (5-300 K) and magnetic field (0-5 T), and reflect the ferromagnetic transition observed in these materials around 250 K. A remarkable elastic softening, which is partially suppressed upon application of a magnetic field, is observed at low temperatures and is believed to be linked to a structural transition that takes place in the Co-doped samples. The soft elastic moduli lead to large magnetostriction below 50 K, reaching a value of 700 ppm at 20 kOe for Tb6Fe0.75Co0.25Bi 2.

AB - Elastic moduli and magnetostriction data are reported for polycrystalline Tb6Fe1-xCoxBi2 (0 ≤ x ≤ 0.375). The elastic moduli c11 and c44 have been measured as a function of temperature (5-300 K) and magnetic field (0-5 T), and reflect the ferromagnetic transition observed in these materials around 250 K. A remarkable elastic softening, which is partially suppressed upon application of a magnetic field, is observed at low temperatures and is believed to be linked to a structural transition that takes place in the Co-doped samples. The soft elastic moduli lead to large magnetostriction below 50 K, reaching a value of 700 ppm at 20 kOe for Tb6Fe0.75Co0.25Bi 2.

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ER -

Elastic and magnetostrictive properties of Tb₆Fe _1-xCo_xBi₂ (0 ≤ x ≤ 0.375)

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