• 文献标题:   Anomalous magnetic behavior in nanocomposite materials of reduced graphene oxide-Ni/NiFe2O4
  • 文献类型:   Article
  • 作  者:   KOLLU P, PRATHAPANI S, VARAPRASADARAO EK, SANTOSH C, MALLICK S, GRACE AN, BAHADUR D
  • 作者关键词:  
  • 出版物名称:   APPLIED PHYSICS LETTERS
  • ISSN:   0003-6951 EI 1077-3118
  • 通讯作者地址:   Indian Inst Technol
  • 被引频次:   9
  • DOI:   10.1063/1.4892476
  • 出版年:   2014

▎ 摘  要

Magnetic Reduced Graphene Oxide-Nickel/NiFe2O4 (RGO-Ni/NF) nanocomposite has been synthesized by one pot solvothermal method. Respective phase formations and their purities in the composite are confirmed by High Resolution Transmission Electron Microscope and X Ray Diffraction, respectively. For the RGO-Ni/NF composite material finite-size effects lead to the anomalous magnetic behavior, which is corroborated in temperature and field dependent magnetization curves. Here, we are reporting the behavior of higher magnetization values for Zero Field Cooled condition to that of Field Cooled for the RGO-Ni/NF nanocomposite. Also, the observed negative and positive moments in Hysteresis loops at relatively smaller applied fields (100 Oe and 200 Oe) are explained on the basis of surface spin disorder. (C) 2014 AIP Publishing LLC.