Magnetism of cluster-deposited Y-Co nanoparticles

Journal Article · Fri Apr 01 00:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3549602· OSTI ID:21538245

Balamurugan, B; Skomski, R; Sellmyer, D J ^[1]; Li, X Z; Shah, V R ^[1]; Hadjipanayis, G C ^[2]; Shield, J E ^[1]

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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)

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.

• OSTI ID: 21538245
• Journal Information: Journal of Applied Physics, Vol. 109, 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; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

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