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cond-mat.str-el2011
Anomalous magnetic properties of multi-walled carbon nanotubes embedded with magnetic nanoparticles: Consistent with ultrahigh temperature superconductivity
Guo-meng Zhao, Jun Wang, Yang Ren +1
We report high-temperature (300-1120 K) magnetization data of Fe and Fe3O4 nanoparticles embedded in multi-walled carbon nanotubes. The magnetic impurity concerntations are precise…
cond-mat.str-el2010
The Curie temperature and exchange energy between two sublattices in half-metallic greigite Fe3S4
Jun Wang, Shi-He Cao, Wei Wu +1
High-temperature magnetic measurements have been carried out in hydrothermally synthesized greigite (Fe3S4). We show that the Curie temperature of greigite is significantly lower t…