Effect of a dc bias field on the dynamic hysteresis of single-domain ferromagnetic particles

2010 ◽  
Vol 107 (7) ◽  
pp. 073914 ◽  
Author(s):  
P. M. Déjardin ◽  
Yu. P. Kalmykov ◽  
B. E. Kashevsky ◽  
H. El Mrabti ◽  
I. S. Poperechny ◽  
...  
Keyword(s):  
Bias Field ◽  
Single Domain ◽  
Dynamic Hysteresis ◽  
Dc Bias ◽  
Ferromagnetic Particles ◽  
Dc Bias Field

Influence of Grain and Grain-Boundary Resistances on Dielectric Properties of KNbO3 Under Small DC Bias Field

2013 ◽  
Vol 96 (10) ◽  
pp. 3127-3132
Author(s):  
Sankaramangalam Ulhas Sharath ◽  
Rajesh Kumar Singh ◽  
  Raghvendra ◽  
Bheeshma Pratap Singh ◽  
Pravin Kumar ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Grain Boundary ◽  
Bias Field ◽  
Dc Bias ◽  
Dc Bias Field

scholarly journals Effects of AC- and DC-bias field poling on piezoelectric properties of Bi-based ceramics

2019 ◽  
Vol 127 (6) ◽  
pp. 353-356
Author(s):  
Sangwook KIM ◽  
Gopal Prasad KHANAL ◽  
Hyunwook NAM ◽  
Ichiro FUJII ◽  
Shintaro UENO ◽  
...  
Keyword(s):  
Piezoelectric Properties ◽  
Bias Field ◽  
Dc Bias ◽  
Dc Bias Field

Microwave Phase Shifters Using Ferroelectric (Ba,Sr)TiO3 Films

2002 ◽  
Vol 720 ◽  
Author(s):  
Won-Jeong Kim ◽  
Eun-Kyoung Kim ◽  
Seung-Eon Moon ◽  
Seok-Kil Han ◽  
Su-Jae Lee ◽  
...  
Keyword(s):  
Phase Angle ◽  
Phase Shifter ◽  
Metal Layer ◽  
Bias Field ◽  
Phase Shifters ◽  
Metal Loss ◽  
Differential Phase ◽  
Bst Films ◽  
Dc Bias ◽  
Dc Bias Field

AbstractThe ferroelectric (Ba0.6Sr0.4)TiO3 (BST) films were prepared on (001) MgO single crystals by pulsed laser deposition. Coplanar waveguide (CPW) type phase shifters controlled by external dc bias field were fabricated on BST films using a 2 μm thick metal layer to reduce metal loss. Microwave properties of the CPW phase shifter were measured using a HP 8510C vector network analyzer from 0.1 – 20 GHz. The fabricated CPW phase shifters (8 mm long) exhibited differential phase angle of 100 ° at 10 GHz with a dc bias field of less than 80 kV/cm between center and ground conductors. Furthermore, a stable differential phase angle (102 ± 3.5 o) was observed from another CPW while changing the power of incident microwave from -10 to +30 dBm. Gap size dependent dielectric constant of the BST film was observed and a simple correction method was suggested in the paper. These results demonstrate the possible application of ferroelectric tunable devices on a high power tunable wireless telecommunication.

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