Self-assembled thin films of Fe3O4-Ag composite nanoparticles for spintronic applications

Chengpeng Jiang, Chi Wah Leung, Philip W.T. Pong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

29 Citations (Scopus)


Controlled self-assembly of multi-component magnetic nanoparticles could lead to nanomaterial-based magnetic devices with novel structures and intriguing properties. Herein, self-assembled thin films of Fe3O4-Ag composite nanoparticles (CNPs) with hetero-dimeric shapes were fabricated using interfacial assembly method. The CNP-assembled thin films were further transferred to patterned silicon substrates followed by vacuum annealing, producing CNP-based magnetoresistive (MR) devices. Due to the presence of intra-particle interfaces and inter-particle barriers, an enhanced MR ratio and a non-linear current-voltage relation were observed in the device. The results of this work can potentially pave the way to the future exploration and development of spintronic devices built from composite nanomaterials.
Original languageEnglish
Pages (from-to)692-696
Number of pages5
JournalApplied Surface Science
Publication statusPublished - 15 Oct 2017


  • Interfacial assembly
  • Magnetic nanoparticle
  • Magnetoresistance
  • Material interface
  • Nanoparticle thin film
  • Spintronics

ASJC Scopus subject areas

  • Surfaces, Coatings and Films


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