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Combinatorial synthesis and screening of (Ba,Sr)(Ti,Mn)O3 thin films for optimization of tunable co-planar waveguides

Combinatorial synthesis and screening of (Ba,Sr)(Ti,Mn)O3 thin films for optimization of tunable co-planar waveguides
Combinatorial synthesis and screening of (Ba,Sr)(Ti,Mn)O3 thin films for optimization of tunable co-planar waveguides
The identification and optimization of tunable dielectric materials exhibiting low loss characteristics in the GHz frequencies are essential in the development of low power devices for microwave applications. We have applied a combinatorial synthetic methodology employing multiple atomic evaporative sources to produce compositional gradient thin film (Ba,Sr)(Ti,Mn)O3 perovskites. High throughput screening chips of both capacitive and waveguide structures are used to measure the compositional dependence of the dielectric properties of the fully characterised thin film materials. The co-planar waveguides are shown to allow measurements at frequencies exceeding 10 GHz. Using this methodology, we have
identified (Ba,Sr)(Ti,Mn)O3 compositions which exhibit good tunability with low losses at microwave frequencies: for a single device with a 10 V DC bias one can achieve a 12 phase shift with excellent transmission characteristics, and an insertion loss of ~3.2 dB We show that small changes in composition can result in a significant change in dielectric characteristics and device performance, and that the experimental protocol developed provides a powerful methodology for the development of materials and microwave devices.
2050-7526
6222-6228
Bakaimi, Ioanna
3c4e7000-517c-41fa-84db-c45641125e4d
He, Xingli
ffde9d7f-5013-49c3-80c0-d71f604aad46
Guerin, Samuel
a73242c8-271f-4d34-af34-bb26b8f5f391
Hashim, Nur
db57f4b1-daf9-44ab-9045-ddad28771a92
Luo, Qi
7ed14e22-a686-4c46-ba51-7a806ee69070
Reaney, Ian M.
0b432c38-9406-4216-aff4-a42bba70527b
Gao, Steven
802c1bb4-849d-4b12-b32a-1548a0732bed
Hayden, Brian
aea74f68-2264-4487-9d84-5b12ddbbb331
De Groot, Cornelis
92cd2e02-fcc4-43da-8816-c86f966be90c
Bakaimi, Ioanna
3c4e7000-517c-41fa-84db-c45641125e4d
He, Xingli
ffde9d7f-5013-49c3-80c0-d71f604aad46
Guerin, Samuel
a73242c8-271f-4d34-af34-bb26b8f5f391
Hashim, Nur
db57f4b1-daf9-44ab-9045-ddad28771a92
Luo, Qi
7ed14e22-a686-4c46-ba51-7a806ee69070
Reaney, Ian M.
0b432c38-9406-4216-aff4-a42bba70527b
Gao, Steven
802c1bb4-849d-4b12-b32a-1548a0732bed
Hayden, Brian
aea74f68-2264-4487-9d84-5b12ddbbb331
De Groot, Cornelis
92cd2e02-fcc4-43da-8816-c86f966be90c

Bakaimi, Ioanna, He, Xingli, Guerin, Samuel, Hashim, Nur, Luo, Qi, Reaney, Ian M., Gao, Steven, Hayden, Brian and De Groot, Cornelis (2018) Combinatorial synthesis and screening of (Ba,Sr)(Ti,Mn)O3 thin films for optimization of tunable co-planar waveguides. Journal of Materials Chemistry C, 2018 (6), 6222-6228. (doi:10.1039/C8TC01396A).

Record type: Article

Abstract

The identification and optimization of tunable dielectric materials exhibiting low loss characteristics in the GHz frequencies are essential in the development of low power devices for microwave applications. We have applied a combinatorial synthetic methodology employing multiple atomic evaporative sources to produce compositional gradient thin film (Ba,Sr)(Ti,Mn)O3 perovskites. High throughput screening chips of both capacitive and waveguide structures are used to measure the compositional dependence of the dielectric properties of the fully characterised thin film materials. The co-planar waveguides are shown to allow measurements at frequencies exceeding 10 GHz. Using this methodology, we have
identified (Ba,Sr)(Ti,Mn)O3 compositions which exhibit good tunability with low losses at microwave frequencies: for a single device with a 10 V DC bias one can achieve a 12 phase shift with excellent transmission characteristics, and an insertion loss of ~3.2 dB We show that small changes in composition can result in a significant change in dielectric characteristics and device performance, and that the experimental protocol developed provides a powerful methodology for the development of materials and microwave devices.

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Accepted/In Press date: 13 May 2018
e-pub ahead of print date: 14 May 2018

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Local EPrints ID: 421657
URI: https://eprints.soton.ac.uk/id/eprint/421657
ISSN: 2050-7526
PURE UUID: 4cdce4ac-9421-44e1-9692-c3bfb6cbd495
ORCID for Ioanna Bakaimi: ORCID iD orcid.org/0000-0002-8083-4413
ORCID for Brian Hayden: ORCID iD orcid.org/0000-0002-7762-1812
ORCID for Cornelis De Groot: ORCID iD orcid.org/0000-0002-3850-7101

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Date deposited: 19 Jun 2018 16:30
Last modified: 16 May 2019 04:01

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Contributors

Author: Ioanna Bakaimi ORCID iD
Author: Xingli He
Author: Samuel Guerin
Author: Nur Hashim
Author: Qi Luo
Author: Ian M. Reaney
Author: Steven Gao
Author: Brian Hayden ORCID iD

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