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Electric field dependent microwave losses in KTaO3 single crystal with YBa2CU3O7-x electrodes

Erik F. Carlsson (Institutionen för mikrovågsteknik) ; E. Wikborg (Institutionen för fysik) ; Spartak Gevorgian (Institutionen för mikroelektronik och nanovetenskap)
Ferroelectrics. Letters section (0731-5171). Vol. 25 (1999), 5-6, p. 141-152.
[Artikel, refereegranskad vetenskaplig]

We have measured the voltage dependence of the resonant frequency and the microwave losses for parallel-plate resonators based on single crystals KTaO3, with YBa2Cu3O7-x electrodes. The losses increase and the dielectric constant decrease monotonically with applied voltage. Both the dielectric constant and the losses show a hysteretic effect in the voltage dependence. The hysteretic effects may be explained by electric field assisted charge trapping both in the KTaO3, crystal and at the KTaO3/YBa2Cu3O7-x interfaces

Denna post skapades 2015-02-11.
CPL Pubid: 212395


Institutioner (Chalmers)

Institutionen för mikrovågsteknik (1900-2003)
Institutionen för fysik (1900-2003)
Institutionen för mikroelektronik och nanovetenskap (1900-2003)


Den kondenserade materiens fysik

Chalmers infrastruktur