Structure and magnetism of dilute Co(Zr) nanoclusters

B. Das; B. Balamurugan; R. Skomski; X. Z. Li; P. Mukherjee; G. C. Hadjipanayis; D. J. Sellmyer

doi:10.1063/1.4795318

Structure and magnetism of dilute Co(Zr) nanoclusters

B. Das, B. Balamurugan, R. Skomski, X. Z. Li, P. Mukherjee, G. C. Hadjipanayis, D. J. Sellmyer

Physics and Astronomy

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Abstract

Co(Zr) nanoclusters having a small fraction of Zr (7.8 at. ) were produced using a cluster-deposition method and aligned using a magnetic field of about 5 kOe prior to deposition. This study shows that Zr addition to Co nanoclusters improves the fraction of hexagonal close-packed structure, magnetic anisotropy, and easy-axis alignment process. Co(Zr) nanoclusters having 7.8 at. of Zr exhibit a considerably enhanced magnetic anisotropy constant K₁ ≈ 6.7 Mergs/cm³ and coercivity H_c ≈ 700 Oe at 300 K as compared to those of Co nanoclusters (K₁ ≈ 2.9 Mergs/cm ³ and H_c ≈180 Oe).

Original language	English (US)
Article number	17B509
Journal	Journal of Applied Physics
Volume	113
Issue number	17
DOIs	https://doi.org/10.1063/1.4795318
State	Published - May 7 2013

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Structure and magnetism of dilute Co(Zr) nanoclusters",

abstract = "Co(Zr) nanoclusters having a small fraction of Zr (7.8 at. ) were produced using a cluster-deposition method and aligned using a magnetic field of about 5 kOe prior to deposition. This study shows that Zr addition to Co nanoclusters improves the fraction of hexagonal close-packed structure, magnetic anisotropy, and easy-axis alignment process. Co(Zr) nanoclusters having 7.8 at. of Zr exhibit a considerably enhanced magnetic anisotropy constant K1 ≈ 6.7 Mergs/cm3 and coercivity Hc ≈ 700 Oe at 300 K as compared to those of Co nanoclusters (K1 ≈ 2.9 Mergs/cm 3 and Hc ≈180 Oe).",

author = "B. Das and B. Balamurugan and R. Skomski and Li, {X. Z.} and P. Mukherjee and Hadjipanayis, {G. C.} and Sellmyer, {D. J.}",

note = "Funding Information: This work was supported by the U.S. Department of Energy/BREM (Grant No. DE-AC02-07CH11358, B.D.), Advanced Research Projects Agency-Energy (Grant No. DE-AR 0000046, B.B, G.C.H.), U.S. Department of Energy (Grant No. DE-FG02-04ER46152, D.J.S.), NSF-Materials Research Science and Engineering Center (Grant No. DMR-0820521; R.S. and P.M.), and Nebraska Center for Materials and Nanoscience (X.Z.L.) ",

year = "2013",

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doi = "10.1063/1.4795318",

language = "English (US)",

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T1 - Structure and magnetism of dilute Co(Zr) nanoclusters

AU - Das, B.

AU - Balamurugan, B.

AU - Skomski, R.

AU - Li, X. Z.

AU - Mukherjee, P.

AU - Hadjipanayis, G. C.

AU - Sellmyer, D. J.

N1 - Funding Information: This work was supported by the U.S. Department of Energy/BREM (Grant No. DE-AC02-07CH11358, B.D.), Advanced Research Projects Agency-Energy (Grant No. DE-AR 0000046, B.B, G.C.H.), U.S. Department of Energy (Grant No. DE-FG02-04ER46152, D.J.S.), NSF-Materials Research Science and Engineering Center (Grant No. DMR-0820521; R.S. and P.M.), and Nebraska Center for Materials and Nanoscience (X.Z.L.)

PY - 2013/5/7

Y1 - 2013/5/7

N2 - Co(Zr) nanoclusters having a small fraction of Zr (7.8 at. ) were produced using a cluster-deposition method and aligned using a magnetic field of about 5 kOe prior to deposition. This study shows that Zr addition to Co nanoclusters improves the fraction of hexagonal close-packed structure, magnetic anisotropy, and easy-axis alignment process. Co(Zr) nanoclusters having 7.8 at. of Zr exhibit a considerably enhanced magnetic anisotropy constant K1 ≈ 6.7 Mergs/cm3 and coercivity Hc ≈ 700 Oe at 300 K as compared to those of Co nanoclusters (K1 ≈ 2.9 Mergs/cm 3 and Hc ≈180 Oe).

AB - Co(Zr) nanoclusters having a small fraction of Zr (7.8 at. ) were produced using a cluster-deposition method and aligned using a magnetic field of about 5 kOe prior to deposition. This study shows that Zr addition to Co nanoclusters improves the fraction of hexagonal close-packed structure, magnetic anisotropy, and easy-axis alignment process. Co(Zr) nanoclusters having 7.8 at. of Zr exhibit a considerably enhanced magnetic anisotropy constant K1 ≈ 6.7 Mergs/cm3 and coercivity Hc ≈ 700 Oe at 300 K as compared to those of Co nanoclusters (K1 ≈ 2.9 Mergs/cm 3 and Hc ≈180 Oe).

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Structure and magnetism of dilute Co(Zr) nanoclusters

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