5.2
10.1016/j.ceramint.2019.10.165
Ceramic International
Mg1-xCdxCo0.05Fe1.95O4 compositesEnhanced magnetic propertiesDual-equivalent mu ' and epsilon 'High miniaturization factorsLow loss factors
Spinel Mg ferrites Mg1-xCdxCo0.05Fe1.95O4 (x=0.0, 0.2, 0.3 and 0.4) as potential agents for the miniaturization of high frequency antennas are presented. All the synthesized compositions were experimentally revealed to possess pure spinel phase. Dual-equivalent permeability and permittivity (mu' approximate to 26, epsilon' approximate to 25, x = 0.3 and mu' approximate to 29, epsilon' approximate to 28, x = 0.4) from 5 to 100 MHz can be achieved by introducing Cd2+ ions, yielding large miniaturization factors of up to 25 and 28. To figure out the effects of Cd2+ ions substitution on magnetic and dielectric properties, the change in microstructure is mainly investigated. Meanwhile, enhanced magnetic properties including upward saturation magnetization (Ms) (approximately 47.60 emu/g) and reduced coercivity (approximately 54.22 Oe) are obtained due to increased grain size and denser microstructure arrangements reflected from scanning electron microscopy images. With low magnitude order of magnetic and dielectric losses factors (tan delta(epsilon) reaches 10(-4), tan delta(mu) reaches 10(-2)), the composites can potentially exhibit high operating efficiencies at high frequencies.
SCI
Engineering
J
46
4
4410-4415
0272-8842
no
2020-03-03
SCI
https://www.sciencedirect.com/science/article/pii/S0272884219330287?via%3Dihub
Pre One:Ga-substituted Mg-Cd ceramic composites for improving the miniaturization and wideband characteristics of high-frequency antennas
Next One:[38] Pengbo Zhou, Guangtong Ma*, Yuke Deng, Xingchao Nie, Yao Zhai, Kang Liu, Han Zhang, Yongjian Li, “A Contactless Self-Regulating HTS Flux Pump,” IEEE Transactions on Applied Superconductivity, vol.30, no.4, Jun. 2020. Art. ID. 3603006. (SCI Index: 000536247700001; EI Index: 20202108705242)