Comparative study of properties of BCZT ceramics prepared from conventional and sol-gel auto combustion powders

Jaimeewong, Piyaporn; Promsawat, Methee; Watcharapasorn, Anucha; Jiansirisomboon, Sukanda

doi:10.1080/10584587.2016.1199913

Cited by 14 publications

(7 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As mentioned earlier, for B-SDS ceramics, the dielectric constant and dielectric loss are enhanced with 80% and 70%, respectively, after increasing the grain size from 3.6 to 6.6 µm. However, in B-CTAB ceramics, the increased dielectric constant was accompanied by a decreasing in grain size as described in Devonshire's phenomenological theory [45,46]. Moreover, it was believed that the increase in density contributed to the enhancement of ε r [19].…”

Section: Dielectric Properties Of Sintered Ceramicsmentioning

confidence: 99%

Enhancement of dielectric properties of lead-free BCZT ferroelectric ceramics by grain size engineering

Hanani

Mezzane

Amjoud

et al. 2019

Superlattices and Microstructures

View full text Add to dashboard Cite

Lead-free Ba 0.85 Ca 0.15 Ti 0.9 Zr 0.1 O 3 (BCZT) ceramics had attracted much attention for the fabrication of microelectronic devices by virtue of their excellent dielectric, ferroelectric and piezoelectric properties. To understand the effects of both mean grain size and grain size distribution on the dielectric properties of lead-free Ba 0.85 Ca 0.15 Ti 0.9 Zr 0.1 O 3 (BCZT) ferroelectric relaxors, an original method was proposed. It is based on the surfactant-assisted solvothermal processing coupled with lowtemperature conventional sintering at 1250 °C. In this way, three highly dense BCZT with different mean grain size and dissimilar grain size distribution were designed. A significant increase of dielectric properties was obtained by a control of grain size and densification process. The dielectric constants measured were ranged from 5370 to 9646 and the dielectric loss was enhanced by 70%. Surprisingly, it was evidenced that there is unequivocal link between mean grain size with dielectric properties. Indeed, it was found that the presence of high density of refined grains leads to an improvement of dielectric 2 properties due to an enhancement of densification. This work may provide a new strategy to design ferroelectric materials with enhanced properties.

show abstract

Section: Dielectric Properties Of Sintered Ceramicsmentioning

confidence: 99%

Enhancement of dielectric properties of lead-free BCZT ferroelectric ceramics by grain size engineering

Hanani

Mezzane

Amjoud

et al. 2019

Superlattices and Microstructures

View full text Add to dashboard Cite

show abstract

“…Where Pmax, Pr, E, Wtotal, Wrec and 𝜂 refer to maximum polarization, remnant polarization, applied external electric field strength, energy storage density, recoverable energy density, energy storage efficiency respectively. ) 𝐸 𝑑𝐸 (9) where ρ is the density of the ceramics, E1 and E2 are the lower and higher electric field limits, respectively, Cp denotes the specific heat capacity of the ceramics.…”

Section: Energy Storage Performancesmentioning

confidence: 99%

Enhancing the dielectric, electrocaloric and energy storage properties of lead-free Ba0.85Ca0.15Zr0.1Ti0.9O3 ceramics prepared via sol-gel process

Mezzourh

Belkhadir²,

Mezzane³

et al. 2021

Physica B: Condensed Matter

View full text Add to dashboard Cite

“…More recently, literature has emerged contradictory findings about phase transitions of 50BCT-50BZT ceramic: on one hand, some works have reported the disappearance of the orthorhombic (O) phase in 50BCT-50BZT unlike in BaTiO3 and suggest the presence of unusual rhombohedral-tetragonal phase at room temperature [19][20][21]. On the other hand, researches have demonstrated the existence of the intermediate O-phase through XRD measurements and dielectric properties [2,22,23].…”

Section: Introductionmentioning

confidence: 99%

Phase transitions, energy storage performances and electrocaloric effect of the lead-free Ba0.85Ca0.15Zr0.10Ti0.90O3 ceramic relaxor

Hanani

Mezzane

Amjoud

et al. 2019

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

Lead-free Ba0.85Ca0.15Zr0.10Ti0.90O3 (BCZT) ceramic exhibits excellent dielectric, ferroelectric and piezoelectric properties at the Morphotropic Phase Boundary (MPB). Previously, we demonstrated that the use of the anionic surfactant Sodium Dodecyl Sulfate (SDS, NaC12H25SO4) could enhance the dielectric properties of BCZT ceramic using surfactant-assisted solvothermal processing [1]. In the present study, structural, dielectric, ferroelectric properties, as well as electrocaloric effect and energy storage performances of this BCZT ceramic were thoroughly investigated. X-ray diffraction (XRD) measurements revealed the presence of single perovskite phase at room temperature with the coexistence of orthorhombic and tetragonal symmetries. In-situ Raman spectroscopy results confirmed the existence of all phase transitions from rhombohedral through orthorhombic and tetragonal to cubic symmetries when the temperature varies as reported in undoped-BaTiO3. Evolution of energy storage performances with temperature have been investigated. BCZT ceramic exhibits a high energy storage efficiency of ~80% at 120 °C. In addition, the electrocaloric responsivity was found to be 0.164×10 -6 K.m/V at 360 K.

show abstract

Comparative study of properties of BCZT ceramics prepared from conventional and sol-gel auto combustion powders

Cited by 14 publications

References 7 publications

Enhancement of dielectric properties of lead-free BCZT ferroelectric ceramics by grain size engineering

Enhancement of dielectric properties of lead-free BCZT ferroelectric ceramics by grain size engineering

Enhancing the dielectric, electrocaloric and energy storage properties of lead-free Ba0.85Ca0.15Zr0.1Ti0.9O3 ceramics prepared via sol-gel process

Phase transitions, energy storage performances and electrocaloric effect of the lead-free Ba0.85Ca0.15Zr0.10Ti0.90O3 ceramic relaxor

Contact Info

Product

Resources

About