Dielectric Ba0.6Sr0.4TiO3 thin films were epitaxially grown on (001) MgO by using pulsed laser ablation. Microstructure studies from x-ray diffraction and electron microscopy suggest that the as-grown films are c-axis oriented with an interface relationship of <100>BSTO//<100>MgO. A room temperature coupled microwave phase shifter has been developed with a phase shift near 250° at 23.675 GHz under an electrical field of 40 V/μm and a figure of merit of ∼53°/dB. The performance of the microwave phase shifter based on the epitaxial Ba0.6Sr0.4TiO3 thin films on (001) MgO is close to that needed for practical applications in wireless communications. © 2001 American Institute of Physics.
Published in:
Applied Physics Letters
(Volume:78
,
Issue:
5
)
Date of Publication:
Jan 2001
- Page(s):
-
652
-
654
- ISSN :
-
0003-6951
- Digital Object Identifier :
-
10.1063/1.1343499
- Product Type:
-
Journals & Magazines
- Date of Current Version :
-
18 June 2009
- Issue Date :
-
Jan 2001