期刊
NANO LETTERS
卷 11, 期 4, 页码 1747-1752出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl200311w
关键词
Nanoparticles; rare-earth transition-metal alloys; cluster-deposition; crystalline ordering; magnetic properties
类别
资金
- Advanced Research Projects Agency-Energy [DE-AR 0000046]
- Department of Energy [DE-FG02-04ER46152]
- NSF - Materials Research Science and Engineering Center [DMR-0820521]
- Nebraska Center for Materials and Nanoscience (NCMN)
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 degrees C for alloy formation and subsequent crystalline ordering. Here we report a single-step method to produce highly ordered R-TM nanoparticles such as YCo5 and Y2Co17, 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.
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