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.

Funders	Funder number
U.S. Department of Defense	N00014-08-1-0783
U.S. Department of Energy
Basic Energy Sciences
University of Tennessee
Division of Materials Sciences and Engineering

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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.

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AU - McGuire, Michael A.

AU - Keppens, Veerle

PY - 2011/4/1

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

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