Excessive grain boundary conductivity of spin-spray deposited ferrite/non-magnetic multilayer

Yun Xing, J. Myers, Ogheneyunume Obi, Nian X. Sun, Yan Zhuang

Research output: Contribution to journalArticlepeer-review

Abstract

Magnetic materials with a high self-biased ferromagnetic resonance (FMR) frequency and low electrical conductivity hold great potential for RF/microwave devices. In this work, ferrite film consisting of Fe 3O 4 (1.2 m)/photoresist (60 nm)/Fe 3O 4 (1.2 μm) was deposited at 90°C via spin spray deposition. Broadband impedance imaging with nanometer spatial resolution was recorded by using scanning microwave microscopy. Compared to a reference sample, it turned out that the grain boundary appeared to be more conductive than the grain.
Original languageEnglish
Article number07A512
JournalJournal of Applied Physics
Volume111
Issue number7
DOIs
StatePublished - Apr 1 2012
Event55th Annual Conference on Magnetism and Magnetic Materials - Atlanta, United States
Duration: Nov 14 2010Nov 18 2010
Conference number: 55

ASJC Scopus Subject Areas

  • General Physics and Astronomy

Keywords

  • Electrical conductivity
  • Crystallographic defects
  • Electron paramagnetic resonance spectroscopy
  • Ferromagnetic materials
  • Ferromagnetic resonance
  • Light sensitive materials
  • Magnetic materials
  • Microscopy
  • Multilayers
  • Welding

Disciplines

  • Electrical and Computer Engineering

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