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Quick fabrication of appropriate morphology and composition CoFe films with desirable microwave properties

  • BaoYu Zong , YuPing Wu , Nguyen Nguyen Phuoc , Pin Ho , JinJun Qiu , Yi Yang , Miao Jun Chua , Wei Beng Ng , YunJie Chen and GuChang Han
Published/Copyright: October 15, 2015
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 106 Issue 10

Abstract

A methodology to quickly prepare CoFe nanofilms with large magnetic permeability and resonance frequency from simple salt solutions is demonstrated. As the microwave properties of thin films are largely determined by their surface morphology and composition, CoFe film with unique morphology and composition is proposed based on theoretical analysis and subsequently electrodeposited with suitable parameters. This approach reveals that FexCo1-x (0.3 < x < 0.5 in atomic ratio) films consisting of sub-30 nm spherical nanoparticles, even in the form of bigger aggregated-nanoparticles, usually show a low coercivity (≤4240 A · m−1), moderate magnetic anisotropy (2900–8580 A · m−1), and high magnetic moment (≥1.4 T), permeability (>200) as well as resonance frequency (>1 GHz). Further experimental analyses show root causes of the phenomena. This methodology also provides useful references to rapidly identify microwave properties of thin films from their surface morphologies and main electrodeposition parameters.

Keywords: Nanofilm electrodepostion; Synthesis design; Permeability and resonance frequency; GHz microwave application; Morphology and composition
*Correspondence address, Dr BaoYu Zong, Temasek Laboratories, National University of Singapore, #09-02, T Lab Building, 5A Engineering Drive 1, Singapore 117411, Tel.: +6566011072, Fax: +6568726840, E-mail:

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Received: 2015-03-06
Accepted: 2015-04-20
Published Online: 2015-10-15
Published in Print: 2015-10-14

© 2015, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111273
Keywords for this article
Nanofilm electrodepostion; Synthesis design; Permeability and resonance frequency; GHz microwave application; Morphology and composition

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. On the widths of the hysteresis of mechanically and thermally induced martensitic transformations in Ni–Ti-based shape memory alloys
  5. The effects of external compressive stress on the kinetics of low temperature bainitic transformation and microstructure in a superbainite steel
  6. The effect of compressing pressure on the microstructure and properties of W-10 wt.% Cu composite
  7. Simulation of dendritic growth of Al-4 wt.% Cu alloy from an undercooled melt
  8. Effects of contact pressure and sliding distance on the lubricated friction and wear properties of Zn-25Al-3Cu alloy: A comparative study with SAE 65 bronze
  9. Electrochemical behaviour of stainless steel in acidic fluoride media
  10. Quick fabrication of appropriate morphology and composition CoFe films with desirable microwave properties
  11. Piezo-absorbing effect of microwave absorbing composites with carbonyl iron particles as the filler
  12. Nanocomposite based on polyaniline emeraldine-base and α-Al2O3: A structural characterization
  13. Effect of Cr3C2 content on the microstructure and properties of Mo2NiB2-based cermets
  14. Short Contributions
  15. Damage mechanisms in aluminum-matrix composites reinforced with nano-alumina particles
  16. Synthesis of ultrafine powder of vanadium carbide V8C7 by microwave heating
  17. People
  18. Prof. Dr. Werner Skrotzki on the occasion of his 65th birthday
  19. DGM News
  20. DGM News
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