Curie temperature reduction in SiO2-coated ultrafine Fe3O4 nanoparticles: Quantitative agreement with a finite-size scaling law
作者： Jun Wang , Wei Wu , Fan Zhao , Guo-meng Zhao
DOI: 10.1063/1.3558918
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摘要: We report high-temperature magnetic measurements for SiO2-coated ultrafine Fe3O4 nanoparticles. The Curie temperatures of the nanoparticles are significantly reduced and follow a finite-size scaling law predicted from Monte Carlo simulations. Our current result provides first quantitative confirmation quasi-zero-dimensional systems.
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