DC field dependent properties of Na0.5K0.5NbO3/SiO2/Si structures at millimeter-wave frequencies
Artikel i vetenskaplig tidskrift, 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


Saeed Abadei

Institutionen för mikroelektronik

Spartak Gevorgian

Institutionen för mikroelektronik och nanovetenskap

C Cho

Alex Grishin

Applied Physics Letters

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

Vol. 78 13 1900 - 1902


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