High tunability of pulsed laser deposited Ba0.7Sr0.3TiO3 thin films on perovskite oxide electrode

Reshmi, R.; Asha, A.S.; Krishnaprasad, P. S.; Jayaraj, M. K.; Sebastian, Mailadil Thomas

doi:10.1016/j.jallcom.2011.02.074

Cited by 17 publications

(5 citation statements)

References 43 publications

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“…), 124,125 introduction of buffer layers to reduce mismatch strain due to lattice and/or coefficient of thermal expansion (CTE) mismatch 126 [129][130][131][132] and tuning of growth and/or post deposition crystallization ambience/temperatures. 122,[126][127][128][129][130][131][132] Although these methods have been fairly successful at reducing dielectric loss, this property enhancement has often been accomplished at the expense of degrading other required properties (tunability, leakage current requirements, etc. ), added complexity and/or film processing steps which are often not complementary metal oxide semiconductor (CMOS) compatible, hence limit their potential.…”

Section: Reducing Dielectric Loss-tangent In Oxide Thin Filmsmentioning

confidence: 99%

Challenges and opportunities for multi-functional oxide thin films for voltage tunable radio frequency/microwave components

Subramanyam¹,

Cole²,

Sun³

et al. 2013

Journal of Applied Physics

147

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There has been significant progress on the fundamental science and technological applications of complex oxides and multiferroics. Among complex oxide thin films, barium strontium titanate (BST) has become the material of choice for room-temperature-based voltage-tunable dielectric thin films, due to its large dielectric tunability and low microwave loss at room temperature. BST thin film varactor technology based reconfigurable radio frequency (RF)/microwave components have been demonstrated with the potential to lower the size, weight, and power needs of a future generation of communication and radar systems. Low-power multiferroic devices have also been recently demonstrated. Strong magneto-electric coupling has also been demonstrated in different multiferroic heterostructures, which show giant voltage control of the ferromagnetic resonance frequency of more than two octaves. This manuscript reviews recent advances in the processing, and application development for the complex oxides and multiferroics, with the focus on voltage tunable RF/microwave components. The over-arching goal of this review is to provide a synopsis of the current state-of the-art of complex oxide and multiferroic thin film materials and devices, identify technical issues and technical challenges that need to be overcome for successful insertion of the technology for both military and commercial applications, and provide mitigation strategies to address these technical challenges. V C 2013 AIP Publishing LLC.

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Section: Reducing Dielectric Loss-tangent In Oxide Thin Filmsmentioning

confidence: 99%

Challenges and opportunities for multi-functional oxide thin films for voltage tunable radio frequency/microwave components

Subramanyam¹,

Cole²,

Sun³

et al. 2013

Journal of Applied Physics

147

View full text Add to dashboard Cite

show abstract

“…Dielectric thin films with voltage tunable permittivity have attracted much attention for applications in the electrically tunable microwave capacitor devices such as resonators, phase shifters, filters and antennas [1][2][3][4]. Due to low dielectric loss and large tenability, Bi 1.5 MgNb 1.5 O 7 (BMN) film has been regarded as a promising potential candidate for tunable microwave devices [4,5].…”

Section: Introductionmentioning

confidence: 99%

Graphene-Based Flexible and Transparent Tunable Capacitors

Man¹,

Xu²,

Jiang³

et al. 2016

Nano Online

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We report a kind of electric field tunable transparent and flexible capacitor with the structure of graphene-Bi 1.5 MgNb 1.5 O 7 (BMN)-graphene. The graphene films with low sheet resistance were grown by chemical vapor deposition. The BMN thin films were fabricated on graphene by using laser molecular beam epitaxy technology. Compared to BMN films grown on Au, the samples on graphene substrates show better quality in terms of crystallinity, surface morphology, leakage current, and loss tangent. By transferring another graphene layer, we fabricated flexible and transparent capacitors with the structure of graphene-BMN-graphene. The capacitors show a large dielectric constant of 113 with high dielectric tunability of~40.7 % at a bias field of 1.0 MV/cm. Also, the capacitor can work stably in the high bending condition with curvature radii as low as 10 mm. This flexible film capacitor has a high optical transparency of~90 % in the visible light region, demonstrating their potential application for a wide range of flexible electronic devices.

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“…Dielectric thin films with voltage tunable permittivity have attracted much attention for applications in the electrically tunable microwave capacitor devices such as resonators, phase shifters, filters and antennas [1–4]. Due to low dielectric loss and large tenability, Bi 1.5 MgNb 1.5 O 7 (BMN) film has been regarded as a promising potential candidate for tunable microwave devices [4, 5].…”

Section: Introductionmentioning

confidence: 99%

Graphene-Based Flexible and Transparent Tunable Capacitors

Man

Jiang

et al. 2015

Nanoscale Res Lett

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We report a kind of electric field tunable transparent and flexible capacitor with the structure of graphene-Bi1.5MgNb1.5O7 (BMN)-graphene. The graphene films with low sheet resistance were grown by chemical vapor deposition. The BMN thin films were fabricated on graphene by using laser molecular beam epitaxy technology. Compared to BMN films grown on Au, the samples on graphene substrates show better quality in terms of crystallinity, surface morphology, leakage current, and loss tangent. By transferring another graphene layer, we fabricated flexible and transparent capacitors with the structure of graphene-BMN-graphene. The capacitors show a large dielectric constant of 113 with high dielectric tunability of ~40.7 % at a bias field of 1.0 MV/cm. Also, the capacitor can work stably in the high bending condition with curvature radii as low as 10 mm. This flexible film capacitor has a high optical transparency of ~90 % in the visible light region, demonstrating their potential application for a wide range of flexible electronic devices.Electronic supplementary materialThe online version of this article (doi:10.1186/s11671-015-0974-4) contains supplementary material, which is available to authorized users.

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High tunability of pulsed laser deposited Ba0.7Sr0.3TiO3 thin films on perovskite oxide electrode

Cited by 17 publications

References 43 publications

Challenges and opportunities for multi-functional oxide thin films for voltage tunable radio frequency/microwave components

Challenges and opportunities for multi-functional oxide thin films for voltage tunable radio frequency/microwave components

Graphene-Based Flexible and Transparent Tunable Capacitors

Graphene-Based Flexible and Transparent Tunable Capacitors

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