Anisotropy induced large exchange bias behavior in ball milled Ni-Co-Mn-Sb alloys

Ajaya K. Nayak; Roshnee Sahoo; K. G. Suresh; A. K. Nigam; X. Chen; R. V. Ramanujan

doi:10.1063/1.3597305

Anisotropy induced large exchange bias behavior in ball milled Ni-Co-Mn-Sb alloys

Ajaya K. Nayak, Roshnee Sahoo, K. G. Suresh, A. K. Nigam, X. Chen, R. V. Ramanujan

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

26 Citations (Scopus)

Abstract

We report the effect of decrease in the grain size on the structural, magnetic and exchange bias (EB) behavior in ball milled Ni_50-x Co_x Mn₃₈ Sb₁₂ (x=0 and 5) Heusler alloys. The existence of a wide range of grain sizes in the ball milled samples results in dramatic changes in the structural and magnetic properties. For x=0, a large EB field of 3.2 kOe is observed in the ball milled sample, compared to a value of 245 Oe of the bulk sample. This increase is attributed to the enhanced exchange coupling between the soft and hard magnetic particles.

Original language	English
Article number	232502
Journal	Applied Physics Letters
Volume	98
Issue number	23
DOIs	https://doi.org/10.1063/1.3597305
Publication status	Published - Jun 6 2011
Externally published	Yes

ASJC Scopus Subject Areas

Physics and Astronomy (miscellaneous)

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abstract = "We report the effect of decrease in the grain size on the structural, magnetic and exchange bias (EB) behavior in ball milled Ni50-x Cox Mn38 Sb12 (x=0 and 5) Heusler alloys. The existence of a wide range of grain sizes in the ball milled samples results in dramatic changes in the structural and magnetic properties. For x=0, a large EB field of 3.2 kOe is observed in the ball milled sample, compared to a value of 245 Oe of the bulk sample. This increase is attributed to the enhanced exchange coupling between the soft and hard magnetic particles.",

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AU - Nayak, Ajaya K.

AU - Sahoo, Roshnee

AU - Suresh, K. G.

AU - Nigam, A. K.

AU - Chen, X.

AU - Ramanujan, R. V.

PY - 2011/6/6

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N2 - We report the effect of decrease in the grain size on the structural, magnetic and exchange bias (EB) behavior in ball milled Ni50-x Cox Mn38 Sb12 (x=0 and 5) Heusler alloys. The existence of a wide range of grain sizes in the ball milled samples results in dramatic changes in the structural and magnetic properties. For x=0, a large EB field of 3.2 kOe is observed in the ball milled sample, compared to a value of 245 Oe of the bulk sample. This increase is attributed to the enhanced exchange coupling between the soft and hard magnetic particles.

AB - We report the effect of decrease in the grain size on the structural, magnetic and exchange bias (EB) behavior in ball milled Ni50-x Cox Mn38 Sb12 (x=0 and 5) Heusler alloys. The existence of a wide range of grain sizes in the ball milled samples results in dramatic changes in the structural and magnetic properties. For x=0, a large EB field of 3.2 kOe is observed in the ball milled sample, compared to a value of 245 Oe of the bulk sample. This increase is attributed to the enhanced exchange coupling between the soft and hard magnetic particles.

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Anisotropy induced large exchange bias behavior in ball milled Ni-Co-Mn-Sb alloys

Abstract

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