Relaxor-Ferroelectric Films for Dielectric Tunable Applications: Effect of Film Thickness and Applied Electric Field

The dielectric properties, tunability and figure-of-merit (FOM) of relaxor Pb0.9La0.1(Zr0.52Ti0.48)O3 (PLZT) films have been investigated. Dielectric measurements ind...

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Autores principales:	Minh D. Nguyen, Doan T. Tran, Ha T. Dang, Chi T. Q. Nguyen, Guus Rijnders, Hung N. Vu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	dielectric properties tunability figure-of-merit relaxor ferroelectrics Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/0448ba5c8d00480ca8fb921e1ccda59a
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spelling	oai:doaj.org-article:0448ba5c8d00480ca8fb921e1ccda59a2021-11-11T18:01:21ZRelaxor-Ferroelectric Films for Dielectric Tunable Applications: Effect of Film Thickness and Applied Electric Field10.3390/ma142164481996-1944https://doaj.org/article/0448ba5c8d00480ca8fb921e1ccda59a2021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6448https://doaj.org/toc/1996-1944The dielectric properties, tunability and figure-of-merit (<i>FOM</i>) of relaxor Pb<sub>0.9</sub>La<sub>0.1</sub>(Zr<sub>0.52</sub>Ti<sub>0.48</sub>)O<sub>3</sub> (PLZT) films have been investigated. Dielectric measurements indicated that the dielectric constant (at zero-bias field), tunability and <i>FOM</i> are enhanced as the film thickness increases, which are mainly attributed to the presence of an interfacial layer near the film-electrode interface. Experimental results illustrated that a slight reduction is observed in both dielectric constant and tunability (−2%) in a wide-frequency range (10 kHz–1 MHz); meanwhile, the <i>FOM</i> value decreases significantly (−17%) with increasing frequency, arising from the higher dielectric loss value. The 1000-nm PLZT film shows the largest tunability of 94.6% at a maximum electric-field of 1450 kV/cm, while the highest <i>FOM</i> factor is 37.6 at 1000 kV/cm, due to the combination of medium tunability (88.7%) and low dielectric loss (0.0236). All these excellent results indicated that the relaxor PLZT films are promising candidates for specific applications in microwave devices.Minh D. NguyenDoan T. TranHa T. DangChi T. Q. NguyenGuus RijndersHung N. VuMDPI AGarticledielectric propertiestunabilityfigure-of-meritrelaxor ferroelectricsTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6448, p 6448 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	dielectric properties tunability figure-of-merit relaxor ferroelectrics Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	dielectric properties tunability figure-of-merit relaxor ferroelectrics Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Minh D. Nguyen Doan T. Tran Ha T. Dang Chi T. Q. Nguyen Guus Rijnders Hung N. Vu Relaxor-Ferroelectric Films for Dielectric Tunable Applications: Effect of Film Thickness and Applied Electric Field
description	The dielectric properties, tunability and figure-of-merit (<i>FOM</i>) of relaxor Pb<sub>0.9</sub>La<sub>0.1</sub>(Zr<sub>0.52</sub>Ti<sub>0.48</sub>)O<sub>3</sub> (PLZT) films have been investigated. Dielectric measurements indicated that the dielectric constant (at zero-bias field), tunability and <i>FOM</i> are enhanced as the film thickness increases, which are mainly attributed to the presence of an interfacial layer near the film-electrode interface. Experimental results illustrated that a slight reduction is observed in both dielectric constant and tunability (−2%) in a wide-frequency range (10 kHz–1 MHz); meanwhile, the <i>FOM</i> value decreases significantly (−17%) with increasing frequency, arising from the higher dielectric loss value. The 1000-nm PLZT film shows the largest tunability of 94.6% at a maximum electric-field of 1450 kV/cm, while the highest <i>FOM</i> factor is 37.6 at 1000 kV/cm, due to the combination of medium tunability (88.7%) and low dielectric loss (0.0236). All these excellent results indicated that the relaxor PLZT films are promising candidates for specific applications in microwave devices.
format	article
author	Minh D. Nguyen Doan T. Tran Ha T. Dang Chi T. Q. Nguyen Guus Rijnders Hung N. Vu
author_facet	Minh D. Nguyen Doan T. Tran Ha T. Dang Chi T. Q. Nguyen Guus Rijnders Hung N. Vu
author_sort	Minh D. Nguyen
title	Relaxor-Ferroelectric Films for Dielectric Tunable Applications: Effect of Film Thickness and Applied Electric Field
title_short	Relaxor-Ferroelectric Films for Dielectric Tunable Applications: Effect of Film Thickness and Applied Electric Field
title_full	Relaxor-Ferroelectric Films for Dielectric Tunable Applications: Effect of Film Thickness and Applied Electric Field
title_fullStr	Relaxor-Ferroelectric Films for Dielectric Tunable Applications: Effect of Film Thickness and Applied Electric Field
title_full_unstemmed	Relaxor-Ferroelectric Films for Dielectric Tunable Applications: Effect of Film Thickness and Applied Electric Field
title_sort	relaxor-ferroelectric films for dielectric tunable applications: effect of film thickness and applied electric field
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0448ba5c8d00480ca8fb921e1ccda59a
work_keys_str_mv	AT minhdnguyen relaxorferroelectricfilmsfordielectrictunableapplicationseffectoffilmthicknessandappliedelectricfield AT doanttran relaxorferroelectricfilmsfordielectrictunableapplicationseffectoffilmthicknessandappliedelectricfield AT hatdang relaxorferroelectricfilmsfordielectrictunableapplicationseffectoffilmthicknessandappliedelectricfield AT chitqnguyen relaxorferroelectricfilmsfordielectrictunableapplicationseffectoffilmthicknessandappliedelectricfield AT guusrijnders relaxorferroelectricfilmsfordielectrictunableapplicationseffectoffilmthicknessandappliedelectricfield AT hungnvu relaxorferroelectricfilmsfordielectrictunableapplicationseffectoffilmthicknessandappliedelectricfield
_version_	1718431922122653696

Relaxor-Ferroelectric Films for Dielectric Tunable Applications: Effect of Film Thickness and Applied Electric Field

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