2016
DOI: 10.1016/j.jallcom.2016.05.324
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Effect of electric field on the dielectric properties of the Barium Strontium Titanate film

Abstract: We investigated the tunability of the dielectric characterization of the Ferroelectric Barium Strontium Titanate (Ba0.5Sr0.5TiO3) thin film on the Strontium Titanate substrate by a dc bias electric field through the terahertz time-domain spectroscopy. The tunability of the real part of the permittivity reached up to 74.8% and the imaginary part of the permittivity reached up to 33.6% when the bias electric field up to 30 V. And the results are attributed to the soft mode hardening caused by the electric field.

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Cited by 17 publications
(7 citation statements)
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“…A more promising welding technology which can solve this problem is the isothermal superplastic solid-state welding method, which does not have a vacuum or shield gas. This method has several advantages, such as its simple process, low cost, and high quality, which makes for solid bonding between the heterogeneous and/or dissimilar materials [ 1 , 2 , 3 , 4 , 5 ]. An external electrical field is known to be able to significantly influence the superplastic deformation and the distribution of vacancy concentration of different materials [ 6 , 7 , 8 , 9 , 10 , 11 , 12 ].…”
Section: Introductionmentioning
confidence: 99%
“…A more promising welding technology which can solve this problem is the isothermal superplastic solid-state welding method, which does not have a vacuum or shield gas. This method has several advantages, such as its simple process, low cost, and high quality, which makes for solid bonding between the heterogeneous and/or dissimilar materials [ 1 , 2 , 3 , 4 , 5 ]. An external electrical field is known to be able to significantly influence the superplastic deformation and the distribution of vacancy concentration of different materials [ 6 , 7 , 8 , 9 , 10 , 11 , 12 ].…”
Section: Introductionmentioning
confidence: 99%
“…В настоящее время существует устойчивый интерес к сегнетоэлектрическим материалам, обусловленный возможностью создания на их основе электрически управляемых сверхвысокочастотных (СВЧ) устройств [1][2][3][4]. Сегодня на базе сегнетоэлектрических (СЭ) тонких пленок реализованы лабораторные макеты управляемых фильтров, конденсаторов с высокой добротностью и фазовращателей для частотного диапазона вплоть до 60 GHz [5][6][7][8].…”
Section: Introductionunclassified
“…Данное физическое явле-ние позволяет реализовать такие сверхвысокочастотные (СВЧ) устройства, как вариконды с высокой доброт-ностью, управляемые фильтры, линии задержки, фазо-вращатели [1][2][3]. Так, ключевой элемент фазированной антенной решетки -фазовращатель, сформированный на основе СЭ-пленки на диэлектрической подложке, потенциально обладает высоким быстродействием, ма-лыми потерями в цепях управления, большой мощ-ностью СВЧ-сигнала и низкой стоимостью массового производства [4].…”
Section: Introductionunclassified