Gadolinium silicide (Gd5Si4) nanoparticles for tuneable broad band microwave absorption
Journal Article
·
· Materials Research Express (Online)
- Indian Institute of Science (India)
- Virginia Commonwealth Univ., Richmond, VA (United States)
- Ames Lab., Ames, IA (United States)
- Ames Lab. and Iowa State Univ., Ames, IA (United States)
- Virginia Commonwealth Univ., Richmond, VA (United States); Iowa State Univ., Ames, IA (United States)
We report that soft magnetic Gd5Si4 nanoparticles exhibit excellent microwave absorption in the Ku-band (12.4-18 GHz) when dispersed in poly (dimethyl siloxane), PDMS. The minimum experimentally recorded reflection loss (RL) of Gd5Si4-PDMS nanocomposite is -69 dB, with a large bandwidth for a single 6 mm-thick layer. The bandwidth can be further extended by using a novel design where 1 mm-thick layers of the nanocomposite are arranged into a modified pyramid-shaped absorber. Standard electromagnetic (EM) simulations confirm experimental results.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- Grant/Contract Number:
- AC02-07CH11358
- OSTI ID:
- 1501618
- Report Number(s):
- IS-J-9907
- Journal Information:
- Materials Research Express (Online), Vol. 6, Issue 5; ISSN 2053-1591
- Publisher:
- IOP PublishingCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 5 works
Citation information provided by
Web of Science
Web of Science
Magnetocaloric Effect of Micro- and Nanoparticles of Gd5Si4
|
journal | July 2019 |
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