Microstructure and dielectric properties of highly tunable Ba0.6Sr0.4TiO3/MgO/Al2O3/ZnO composite

Hu, Guoxin; Gao, Feng; Liu, Liangliang; Xu, Binduo; Liu, Zheng‐Tang

doi:10.1016/j.jallcom.2011.12.105

Cited by 21 publications

(12 citation statements)

References 25 publications

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“…Recently, electrically tunable dielectrics such as (Ba,Sr)TiO 3 (BST) ceramics have been extensively investigated for use in microwave tunable devices [9][10][11]. In our previous work, we determined the tunability of BMAZ ceramics [17]; these ceramics exhibited a high tunability of 27.4% under a bias of 1.0 kV/mm, as well as improved dielectric properties and breakdown strength.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…BMAZ powders were prepared by the conventional solid-state reaction method, details of which are provided in our previous work [17]. The BMAZ particles were dispersed in an aqueous solution of H 2 O 2 (30%, 500 mL) by magnetically stirring at 80 °C for 2 h; the solution was then baked in an oven at 60 °C for 10 h. The resulting ~1.2-µm-sized BMAZ particles had an amorphous structure.…”

Section: Preparation Of Bmaz/pvdf Compositesmentioning

confidence: 99%

“…The parameter T 0 , which is calculated as the tunability under a unit applied electric bias [17], is typically used to compare the tunability under different measuring conditions; i.e.,…”

Section: Dielectric Tunability Of Bmaz/pvdf Compositesmentioning

confidence: 99%

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Characterization and dielectric properties of modified Ba0.6Sr0.4TiO3/poly(vinylidene fluoride) composites with high dielectric tunability

Zhang

Gao

et al. 2015

Composites Science and Technology

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Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Preparation Of Bmaz/pvdf Compositesmentioning

confidence: 99%

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Characterization and dielectric properties of modified Ba0.6Sr0.4TiO3/poly(vinylidene fluoride) composites with high dielectric tunability

Zhang

Gao

et al. 2015

Composites Science and Technology

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“…The tunability change could be regarded as a linear increase when electric bias is more than 0.8 kV/mm. That means the comparison condition for tunability is applicable when the applied biasing is above 0.8 kV/mm [36]. To compare the tunability of KsnB ceramics doped with varying amounts of Bi 2 o 3 , the comparison condition for tunability is chosen as E = 1.0 kV/mm.…”

Section: Resultsmentioning

confidence: 99%

Microstructure and dielectric behavior of Bi2O3-doped KSr2Nb5O15 ceramics

Gao

Liu

et al. 2013

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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Bi 2 O 3 -doped KSr 2 Nb 5 O 15 (KSNB) ceramics with relative density higher than 96% were successfully prepared by sintering at 1300°C. The addition of Bi 2 O 3 will decrease the tetragonal degree of the materials, improve the densification, and promote the grain growth of KSNB ceramics. Relaxation behavior can be observed in KSNB ceramics, which is attributed to the complex response of the polar nanoregions and matrices resulting from substitution of Bi 3+ for Sr 2+ and K + . Bi 2 O 3 -doped KSr 2 Nb 5 O 15 ceramics show good temperaturedependence performance and high dielectric tunability. KSNB ceramics with 4.0 wt% added Bi 2 O 3 show the maximum tunability, and capacitance changes with temperature meet the requirement of the X7R standard, which makes these ceramics promising candidate materials for multilayer capacitors and tunable phase shifters.

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“…For example, to improve the FOM of titanium-containing perovskite dielectric tunable ferroelectric materials such as (Ba,Sr)TiO 3 (Pb,Sr)TiO 3 , etc. [10,11], due to the oxidation state of titanium being easily reduced from Ti 4+ to Ti 3+ , strategies with doping various oxides (MgO, etc.) and ions (Mn 2+ etc.)…”

Section: Introductionmentioning

confidence: 99%

High dielectric tunability, electrostriction strain and electrocaloric strength at a tricritical point of tetragonal, rhombohedral and pseudocubic phases

Peng

Zhang

et al. 2015

Journal of Alloys and Compounds

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High dielectric tunability, electrostriction strain and electrocaloric strength at a tricritical point of tetragonal, rhombohedral and pseudocubic phases, Journal of Alloys and Compounds (2015), Abstract A relaxor ferroelectric Pb(Ni 1/3 Nb 2/3 ) 0.5 Zr 0.15 Ti 0.35 O 3 (PNNZT) ceramic was reported, designed upon an idea that the composition is selected to near a tricritical point of tetragonal, rhombohedral and pseudocubic phases. High dielectric tunability of 67%, A C C E P T E D ACCEPTED MANUSCRIPT 2 simultaneously with high electrostriction strain of 0.319% and high electrocaloric strength (∆T/∆E) of 32.5 mK cm/kV are achieved, which make it a promising multifunctional material for applications in dielectric tunable, precisely controlled and electric refrigeration devices. This is endowed by the low energy barrier among the transitions of phases and strong relaxor ferroelectric activities around the tricritical point. This work provides a guide for the design of multifunctional ferroelectric materials and can promote the development of other multifunctional ferroic materials.

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Microstructure and dielectric properties of highly tunable Ba0.6Sr0.4TiO3/MgO/Al2O3/ZnO composite

Cited by 21 publications

References 25 publications

Characterization and dielectric properties of modified Ba0.6Sr0.4TiO3/poly(vinylidene fluoride) composites with high dielectric tunability

Characterization and dielectric properties of modified Ba0.6Sr0.4TiO3/poly(vinylidene fluoride) composites with high dielectric tunability

Microstructure and dielectric behavior of Bi<sub>2</sub>O<sub>3</sub>-doped KSr<sub>2</sub>Nb<sub>5</sub>O<sub>15</sub> ceramics

High dielectric tunability, electrostriction strain and electrocaloric strength at a tricritical point of tetragonal, rhombohedral and pseudocubic phases

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