Tunable SrTiO3 Varactors Using Parallel Plate and Interdigital Structures

doi:10.1109/77.622151

Tunable SrTiO3 Varactors Using Parallel Plate and Interdigital Structures

Research output: Contribution to conference › Paper

Abstract

The dielectric properties of SrTiO3 (STO)/YBCO and STO films deposited of LaAlO3 substrates were evaluated, for potential varactor applications wherein the capacitance is altered via a dc voltage applied across the STO film. The optimal growth temperature for the STO films in the STO/YBCO structures was 800 degrees C; higher temperatures resulted in interfacial degradation and poor film quality,mand lower temperatures resulted in films with lower dielectric constants (Epsilon tau) and tunabilities. Interdigital varactors comprised of STO films deposited directly on LaAlO3 displayed higher tunabilities and significantly lower losses.

Original language	American English
Pages	3512-3515
Number of pages	4
DOIs	https://doi.org/10.1109/77.622151
State	Published - 1997

NREL Publication Number

NREL/CP-520-24389

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10.1109/77.622151

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title = "Tunable SrTiO3 Varactors Using Parallel Plate and Interdigital Structures",

abstract = "The dielectric properties of SrTiO3 (STO)/YBCO and STO films deposited of LaAlO3 substrates were evaluated, for potential varactor applications wherein the capacitance is altered via a dc voltage applied across the STO film. The optimal growth temperature for the STO films in the STO/YBCO structures was 800 degrees C; higher temperatures resulted in interfacial degradation and poor film quality,mand lower temperatures resulted in films with lower dielectric constants (Epsilon tau) and tunabilities. Interdigital varactors comprised of STO films deposited directly on LaAlO3 displayed higher tunabilities and significantly lower losses.",

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N2 - The dielectric properties of SrTiO3 (STO)/YBCO and STO films deposited of LaAlO3 substrates were evaluated, for potential varactor applications wherein the capacitance is altered via a dc voltage applied across the STO film. The optimal growth temperature for the STO films in the STO/YBCO structures was 800 degrees C; higher temperatures resulted in interfacial degradation and poor film quality,mand lower temperatures resulted in films with lower dielectric constants (Epsilon tau) and tunabilities. Interdigital varactors comprised of STO films deposited directly on LaAlO3 displayed higher tunabilities and significantly lower losses.

AB - The dielectric properties of SrTiO3 (STO)/YBCO and STO films deposited of LaAlO3 substrates were evaluated, for potential varactor applications wherein the capacitance is altered via a dc voltage applied across the STO film. The optimal growth temperature for the STO films in the STO/YBCO structures was 800 degrees C; higher temperatures resulted in interfacial degradation and poor film quality,mand lower temperatures resulted in films with lower dielectric constants (Epsilon tau) and tunabilities. Interdigital varactors comprised of STO films deposited directly on LaAlO3 displayed higher tunabilities and significantly lower losses.

U2 - 10.1109/77.622151

DO - 10.1109/77.622151

M3 - Paper

SP - 3512

EP - 3515

ER -

Tunable SrTiO3 Varactors Using Parallel Plate and Interdigital Structures

Abstract

NREL Publication Number

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