Synthesis and characterization of Fe3O4 nanoparticles coated with poly(ethylene glycol)and poly(vinyl pyrrolidone)
TU Zhijiang, ZHANG Baolin, FENG Lingyun, ZHAO Fangyuan
CIESC Journal . 2012, (12): 4089 -4095 .  DOI: 10.3969/j.issn.0438-1157.2012.12.050