Magnetism of cluster-deposited Y-Co nanoparticles

B. Balamurugan; R. Skomski; X. Z. Li; V. R. Shah; G. C. Hadjipanayis; J. E. Shield; D. J. Sellmyer

doi:10.1063/1.3549602

Magnetism of cluster-deposited Y-Co nanoparticles

B. Balamurugan, R. Skomski, X. Z. Li, V. R. Shah, G. C. Hadjipanayis, J. E. Shield, D. J. Sellmyer

Physics and Astronomy

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

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Abstract

Nanoparticles of YCo₂, YCo_3,and YCo₅ are produced by cluster-deposition and investigated bothstructurally and magnetically. The nanoparticles have sizes of less than 10 nm and aresuperparamagnetic at 300 K, irrespective of stoichiometry. As-produced nanoparticles exhibitdisordered structures with magnetic properties differing from those of the bulk particles.The temperature-dependent magnetization curves of the nanoparticles reveal blocking temperatures from 110 to 250 K, depending on stoichiometry. The magnetic anisotropy constant K₁ of disordered YCo₅ nanoparticles of 7.8 nm in size is 3.5 × 10⁶ ergs/cm³, higher than those of thedisordered YCo₂ (8.9 × 10⁵ ergs/cm³) and YCo₃ (1.0 × 10⁶ ergs/cm³) nanoparticles.

Original language	English (US)
Article number	07A707
Journal	Journal of Applied Physics
Volume	109
Issue number	7
DOIs	https://doi.org/10.1063/1.3549602
State	Published - Apr 1 2011

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Physics and Astronomy(all)

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title = "Magnetism of cluster-deposited Y-Co nanoparticles",

abstract = "Nanoparticles of YCo2, YCo3,and YCo5 are produced by cluster-deposition and investigated bothstructurally and magnetically. The nanoparticles have sizes of less than 10 nm and aresuperparamagnetic at 300 K, irrespective of stoichiometry. As-produced nanoparticles exhibitdisordered structures with magnetic properties differing from those of the bulk particles.The temperature-dependent magnetization curves of the nanoparticles reveal blocking temperatures from 110 to 250 K, depending on stoichiometry. The magnetic anisotropy constant K1 of disordered YCo5 nanoparticles of 7.8 nm in size is 3.5 × 106 ergs/cm3, higher than those of thedisordered YCo2 (8.9 × 105 ergs/cm3) and YCo3 (1.0 × 106 ergs/cm3) nanoparticles.",

author = "B. Balamurugan and R. Skomski and Li, {X. Z.} and Shah, {V. R.} and Hadjipanayis, {G. C.} and Shield, {J. E.} and Sellmyer, {D. J.}",

note = "Funding Information: This research is supported by ARPA-E (DE-AR 0000046, BB), BREM (BB, RS), DOE (DE-FG02-04ER46152, DJS, GCH), NSF-MRSEC (DMR-0820521, RS), ONR (JES, RS), and NCMN. Thanks are due to Z. Sun for technical assistance.",

year = "2011",

month = apr,

day = "1",

doi = "10.1063/1.3549602",

language = "English (US)",

volume = "109",

journal = "Journal of Applied Physics",

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T1 - Magnetism of cluster-deposited Y-Co nanoparticles

AU - Balamurugan, B.

AU - Skomski, R.

AU - Li, X. Z.

AU - Shah, V. R.

AU - Hadjipanayis, G. C.

AU - Shield, J. E.

AU - Sellmyer, D. J.

N1 - Funding Information: This research is supported by ARPA-E (DE-AR 0000046, BB), BREM (BB, RS), DOE (DE-FG02-04ER46152, DJS, GCH), NSF-MRSEC (DMR-0820521, RS), ONR (JES, RS), and NCMN. Thanks are due to Z. Sun for technical assistance.

PY - 2011/4/1

Y1 - 2011/4/1

N2 - Nanoparticles of YCo2, YCo3,and YCo5 are produced by cluster-deposition and investigated bothstructurally and magnetically. The nanoparticles have sizes of less than 10 nm and aresuperparamagnetic at 300 K, irrespective of stoichiometry. As-produced nanoparticles exhibitdisordered structures with magnetic properties differing from those of the bulk particles.The temperature-dependent magnetization curves of the nanoparticles reveal blocking temperatures from 110 to 250 K, depending on stoichiometry. The magnetic anisotropy constant K1 of disordered YCo5 nanoparticles of 7.8 nm in size is 3.5 × 106 ergs/cm3, higher than those of thedisordered YCo2 (8.9 × 105 ergs/cm3) and YCo3 (1.0 × 106 ergs/cm3) nanoparticles.

AB - Nanoparticles of YCo2, YCo3,and YCo5 are produced by cluster-deposition and investigated bothstructurally and magnetically. The nanoparticles have sizes of less than 10 nm and aresuperparamagnetic at 300 K, irrespective of stoichiometry. As-produced nanoparticles exhibitdisordered structures with magnetic properties differing from those of the bulk particles.The temperature-dependent magnetization curves of the nanoparticles reveal blocking temperatures from 110 to 250 K, depending on stoichiometry. The magnetic anisotropy constant K1 of disordered YCo5 nanoparticles of 7.8 nm in size is 3.5 × 106 ergs/cm3, higher than those of thedisordered YCo2 (8.9 × 105 ergs/cm3) and YCo3 (1.0 × 106 ergs/cm3) nanoparticles.

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Magnetism of cluster-deposited Y-Co nanoparticles

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