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Title: Magnetism of cluster-deposited Y-Co nanoparticles

Abstract

Nanoparticles of YCo{sub 2}, YCo{sub 3}, and YCo{sub 5} 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 K{sub 1}of disordered YCo{sub 5} nanoparticles of 7.8 nm in size is 3.5 x 10{sup 6} ergs/cm{sup 3}, higher than those of thedisordered YCo{sub 2} (8.9 x 10{sup 5} ergs/cm{sup 3}) and YCo{sub 3} (1.0 x 10{sup 6} ergs/cm{sup 3}) nanoparticles.

Authors:
; ;  [1]; ;  [1];  [2];  [1]
  1. Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, NE 68588 (United States)
  2. Department of Physics and Astronomy, University of Delaware, Newark, DE 19716 (United States)
Publication Date:
OSTI Identifier:
21538245
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 109; Journal Issue: 7; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: DOI: 10.1063/1.3549602; (c) 2011 American Institute of Physics; Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ANISOTROPY; CHANNELING; COBALT ALLOYS; DEPOSITION; MAGNETIC PROPERTIES; MAGNETIZATION; METALS; NANOSTRUCTURES; PARTICLE SIZE; SPUTTERING; STOICHIOMETRY; SUPERPARAMAGNETISM; TEMPERATURE DEPENDENCE; YTTRIUM ALLOYS; ALLOYS; ELEMENTS; MAGNETISM; PHYSICAL PROPERTIES; SIZE; TRANSITION ELEMENT ALLOYS

Citation Formats

Balamurugan, B, Skomski, R, Sellmyer, D J, Department of Physics and Astronomy, University of Nebraska, Lincoln, NE 68588, Li, X Z, Shah, V R, Hadjipanayis, G C, Shield, J E, and Department of Mechanical Engineering, University of Nebraska, Lincoln, NE 68588. Magnetism of cluster-deposited Y-Co nanoparticles. United States: N. p., 2011. Web. doi:10.1063/1.3549602.
Balamurugan, B, Skomski, R, Sellmyer, D J, Department of Physics and Astronomy, University of Nebraska, Lincoln, NE 68588, Li, X Z, Shah, V R, Hadjipanayis, G C, Shield, J E, & Department of Mechanical Engineering, University of Nebraska, Lincoln, NE 68588. Magnetism of cluster-deposited Y-Co nanoparticles. United States. https://doi.org/10.1063/1.3549602
Balamurugan, B, Skomski, R, Sellmyer, D J, Department of Physics and Astronomy, University of Nebraska, Lincoln, NE 68588, Li, X Z, Shah, V R, Hadjipanayis, G C, Shield, J E, and Department of Mechanical Engineering, University of Nebraska, Lincoln, NE 68588. 2011. "Magnetism of cluster-deposited Y-Co nanoparticles". United States. https://doi.org/10.1063/1.3549602.
@article{osti_21538245,
title = {Magnetism of cluster-deposited Y-Co nanoparticles},
author = {Balamurugan, B and Skomski, R and Sellmyer, D J and Department of Physics and Astronomy, University of Nebraska, Lincoln, NE 68588 and Li, X Z and Shah, V R and Hadjipanayis, G C and Shield, J E and Department of Mechanical Engineering, University of Nebraska, Lincoln, NE 68588},
abstractNote = {Nanoparticles of YCo{sub 2}, YCo{sub 3}, and YCo{sub 5} 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 K{sub 1}of disordered YCo{sub 5} nanoparticles of 7.8 nm in size is 3.5 x 10{sup 6} ergs/cm{sup 3}, higher than those of thedisordered YCo{sub 2} (8.9 x 10{sup 5} ergs/cm{sup 3}) and YCo{sub 3} (1.0 x 10{sup 6} ergs/cm{sup 3}) nanoparticles.},
doi = {10.1063/1.3549602},
url = {https://www.osti.gov/biblio/21538245}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 7,
volume = 109,
place = {United States},
year = {Fri Apr 01 00:00:00 EDT 2011},
month = {Fri Apr 01 00:00:00 EDT 2011}
}