Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 46, Issue 12, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/46/12/125003
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Funding
- National 973-project of China [2009CB623302]
- National Science Foundation of China [61025002]
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Ni0.5Zn0.5Fe2O4 (NZO)/epoxy composites with 1-3-type structure consisting of NZO rods in an epoxy matrix were fabricated by the dice and fill technique, with volume fraction from 40% to 70%. Improved frequency stability of the dielectric and magnetic properties was obtained in the frequency range from 10MHz to 1 GHz. The optimized composite sample with 60% NZO rods in volume showed high dielectric and magnetic performance with permittivity between 9.2 and 10.3, dielectric loss between 0.09 and 0.25 in the frequency range from 50 MHz to 1 GHz, and permeability between 5.3 and 5.6, magnetic loss between 0.02 and 0.54 in the frequency range from 10MHz to 1 GHz, respectively. Moreover, its permeability mu' was increased to 170%, and the magnetic loss tan delta(mu) was reduced to only 80% compared with the conventional 0-3-type composites with 40 vol% fillers at 1 GHz. The modelling and simulation results by Ansoft HFSS provided a reasonable explanation for the experimental results.
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