DC field dependent properties of Na0.5K0.5NbO3/SiO2/Si structures at millimeter-wave frequencies
Journal article, 2001

Dielectric properties of laser-ablated 0.5-μm-thick c-axis epitaxial Na0.5K0.5NbO3 films on high-resistivity (7.7 Ω cm) silicon SiO2/Si substrate are studied experimentally at frequencies up to 40 GHz. For measurements, planar 0.5-μm-thick gold electrodes (interdigital and straight slot) are photolithography defined on the top surface of Na0.5K0.5NbO3 films. The slot width between the electrodes is 2 or 4 μm. 13% capacitance change at 40 V dc bias and Q factor more than 15 are observed at 40 GHz, which makes the structure useful for applications in electrically tunable millimeter-wave devices

capacitance dielectric losses epitaxial layers ferroelectric thin films microwave materials

Author

Saeed Abadei

Department of Microelectronics

Spartak Gevorgian

Department of Microelectronics and Nanoscience

C Cho

Alex Grishin

Applied Physics Letters

0003-6951 (ISSN) 1077-3118 (eISSN)

Vol. 78 13 1900 - 1902

Subject Categories

Condensed Matter Physics

DOI

10.1063/1.1353838

More information

Created

10/7/2017