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Improved high permeability CoZrTaB laminated thin films with novel CMOS compatible dielectric material

  • Guannan Wei
  • , Rajasree Das
  • , Daniel Lordan
  • , Ranajit Sai
  • , Mike Hayes
  • , Marek Lorenc
  • , Barry Clarke
  • , David Hurley
  • , Paul McCloskey
  • Tel Magnetic Solutions

Research output: Chapter in Book/Report/Conference proceedingsConference proceedingpeer-review

Abstract

This paper present an optimized CoZrTaB-based laminated thin films with a novel wet etch-able oxide dielectric material. Wet etching capability was studied on the stack material exhibiting a narrow and clean undercut. Good uniaxial anisotropy with low coercivity was achieved via in-situ magnetic alignment during magnetron sputtering. Permeability of 432 and Q-factor of 23.4 at 100 MHz were observed in high frequency permeameter measurement. Finally thermal annealing was carried out at various temperatures. Uniaxial anisotropy was maintained up to 300 °C, while an enhancement of permeability (by 25%) was observed.

Original languageEnglish
Title of host publication2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798350338362
DOIs
Publication statusPublished - 2023
Event2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Sendai, Japan
Duration: 15 May 202319 May 2023

Publication series

Name2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings

Conference

Conference2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023
Country/TerritoryJapan
CitySendai
Period15/05/2319/05/23

Keywords

  • CMOS compatible
  • high frequency soft magnetic material
  • high permeability
  • inductor

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