期刊
CHEMISTRY OF MATERIALS
卷 23, 期 16, 页码 3769-3774出版社
AMER CHEMICAL SOC
DOI: 10.1021/cm201610k
关键词
Fe3Se4; ferrimagnetic; magnetic nanostructures; hard magnetic materials
资金
- National Science Foundation [DMR0547036]
Fe3Se4 nanostructures have been synthesized by a one-pot high-temperature organic-solution-phase method. The size of these nanostructures can be tuned from 50 to 500 nm, and their shapes can be varied from nanosheets and nanocacti to nanoplatelets. These nanostructures exhibit hard magnetic properties, with giant coercivity values reaching 40 kOe at 10 K and 4 kOe at room temperature. The estimated magnetocrystalline anisotropy constant is 6 x 10(6) erg cm(-3), comparable to that of hexagonal close-packed cobalt. The magnetic properties can be further tuned by substituting Fe ions by other transition-metal elements such as Co.
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