title: Cluster synthesis and direct ordering of rare-earth transition-metal nanomagnets.
abstract: Rare-earth transition-metal (R-TM) alloys show superior permanent magnetic properties in the bulk, but the synthesis and application of R-TM nanoparticles remains a challenge due to the requirement of high-temperature annealing above about 800 °C for alloy formation and subsequent crystalline ordering. Here we report a single-step method to produce highly ordered R-TM nanoparticles such as YCo(5) and Y(2)Co(17), without high-temperature thermal annealing by employing a cluster-deposition system and investigate their structural and magnetic properties. The direct ordering is highly desirable to create and assemble R-TM nanoparticle building blocks for future permanent-magnet and other significant applications.
authors.affiliation: Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, Nebraska 68588, United States. bbalasubramanian2@unl.edu
authors.forename: Balamurugan
authors.initials: B
authors.lastname: Balasubramanian
authors.forename: Ralph
authors.initials: R
authors.lastname: Skomski
authors.forename: Xingzhong
authors.initials: X
authors.lastname: Li
authors.forename: Shah R
authors.initials: SR
authors.lastname: Valloppilly
authors.forename: Jeffrey E
authors.initials: JE
authors.lastname: Shield
authors.forename: George C
authors.initials: GC
authors.lastname: Hadjipanayis
authors.forename: David J
authors.initials: DJ
authors.lastname: Sellmyer
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D008280:Magnetics / Q000295:instrumentation*; D008422:Materials Testing; D008674:Metals, Rare Earth / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D028561:Transition Elements / Q000737:chemistry
chemical_list: D008674:Metals, Rare Earth; D028561:Transition Elements