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Lan+1NinO3n+1 (n = 1, 2, 3) RP-phases for EMI shielding and ESD applications

  • Akbar Khan
  • , Raz Muhammad*
  • , M. Arshad Farhan
  • , Hafiz Zahid Shafi
  • , Atta Ullah Shah
  • , Fayaz Hussain
  • , Danadan Han
  • , Dawei Wang
  • *Corresponding author for this work
  • Abdul Wali Khan University Mardan
  • Pakistan Atomic Energy Commission
  • Pakistan Institute of Engineering and Applied Sciences
  • NED University of Engineering and Technology
  • Jilin Institute of Chemical Technology
  • Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

Advancements in electronics and digitization have led to concerns about electromagnetic interference (EMI), necessitating effective EMI shielding measures. This study investigates the electromagnetic wave absorption properties of Lan+1NinO3n+1 (n = 1, 2, 3) Ruddlesden-popper (RP) phases. While a single phase, La2NiO4, was obtained for n = 1, mixed phases of La3N2O7-δ/La4Ni3O10-δ were observed for n = 2 and 3. Electron paramagnetic resonance spectroscopy revealed superparamagnetic behavior for La2NiO4 and multi-resonance peaks for La3Ni2O7-δ, suggesting increased surface defects. La3Ni2O7-δ exhibited enhanced absorption properties, with a minimum reflection loss of −19.4 dB and a broader (less than −10 dB) bandwidth covering 4.2 GHz (X-band) at a thickness of 1.4 mm, attributed to optimal conductivity, magnetic resonance, eddy current losses, and synergistic dielectric loss. The sample with n = 2 demonstrates potential for EMI absorption and electrostatic discharge (ESD) applications.

Original languageEnglish
Pages (from-to)33392-33399
Number of pages8
JournalCeramics International
Volume50
Issue number18
DOIs
StatePublished - 15 Sep 2024
Externally publishedYes

Keywords

  • EM absorption
  • EMI shielding
  • ESD
  • Ruddlesden-popper phases

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