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Title: Thermal conductivity prediction of magnetic composite sheet for near-field electromagnetic absorption

The magnetic composite sheets were designed by using core-shell structured magnetic fillers instead of uncoated magnetic fillers to resolve concurrently the electromagnetic interference and thermal radiation problems. To predict the thermal conductivity of composite sheet, we calculated the thermal conductivity of the uncoated magnetic fillers and core-shell structured fillers. And then, the thermal conductivity of the magnetic composites sheet filled with core-shell structured magnetic fillers was calculated and compared with that of the uncoated magnetic fillers filled in composite sheet. The magnetic core and shell material are employed the typical Fe-Al-Si flake (60 μm × 60 μm × 1 μm) and 250 nm-thick AlN with high thermal conductivity, respectively. The longitudinal thermal conductivity of the core-shell structured magnetic composite sheet (2.45 W/m·K) enhanced about 33.4% in comparison with that of uncoated magnetic fillers (1.83 W/m·K) for the 50 vol. % magnetic filler in polymer matrix.
Authors:
;  [1] ;  [2] ;  [1] ;  [3]
  1. Department of Physics, Yeungnam University, Gyeongsan 712-749 (Korea, Republic of)
  2. Department of Materials Engineering, University of British Columbia, Vancouver V6T 1Z4 (Canada)
  3. (Canada)
Publication Date:
OSTI Identifier:
22410009
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ABSORPTION; ALUMINIUM; ALUMINIUM NITRIDES; COMPARATIVE EVALUATIONS; COMPOSITE MATERIALS; ELECTROMAGNETIC FIELDS; FILLERS; INTERFERENCE; IRON; MAGNET CORES; MAGNETIC CORES; MAGNETIC MATERIALS; SHEETS; SILICON; THERMAL CONDUCTIVITY; THERMAL RADIATION