Internal Electric Field in Co-Doped BaTiO3 With Co2+/3+, Nb5+, Li+, and F−: Impact on Functional Properties and Charge Compensation With Niobium and Fluorine Ions

Ul, Rémy; Levassort, Franck; Lematre, M.; Tran-Huu-Hue, Louis-Pascal; Pham‐Thi, M.

doi:10.1109/tuffc.2018.2878365

Cited by 3 publications

(1 citation statement)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Then, these configurations relax with time to reach an aged state in the tetragonal phase. These phenomena have been studied in another work in more detail, in particular, the kinetics for the hysteresis loop deformation and its dependence on the poling process …”

Section: Resultsmentioning

confidence: 99%

Improved Properties of Doped BaTiO₃ Piezoelectric Ceramics

Marchet

Pham‐Thi

et al. 2019

Physica Status Solidi (a)

Self Cite

View full text Add to dashboard Cite

À δ lead-free piezoelectric ceramics are prepared using solid-state reactions. The use of a Li 2 O sintering aid enables one to obtain dense ceramics at a temperature of 1100 C instead of the 1350 C used for BaTiO 3 (BT) in conventional sintering. X-ray diffraction (XRD) data indicate structural modifications, suggesting insertion of the doping elements into the tetragonal structure. The insertion of Li/Ca/Co/Nb improves piezoelectric properties: for micrograin-size ceramics, a piezoelectric charge constant and an electromechanical coupling factor of d 33 ¼ 255 pC N À1 and k p ¼ 43.5% are reached, respectively. Furthermore, a thermal annealing of the cobalt-doped sample at 1080 C under O 2 atmosphere leads to d 33 ¼ 280 pC N À1 and k p ¼ 44.6%. BaTiO 3 :Co ceramics present distorted ferroelectric cycles due to the occurrence of an internal bias field. The high mechanical quality factors (Q m > 1000) obtained for the doped BT ceramics afford stability against electrical stress of up to 500 V RMS mm À1 , which makes these materials competitive with PZT4 for some applications.

show abstract

Section: Resultsmentioning

confidence: 99%

Improved Properties of Doped BaTiO₃ Piezoelectric Ceramics

Marchet

Pham‐Thi

et al. 2019

Physica Status Solidi (a)

Self Cite

View full text Add to dashboard Cite

show abstract

Silicone composites cured under a high electric field: an electromechanical experimental study

2020

View full text Add to dashboard Cite

Recently, dielectric elastomers (DEs) become enviable materials for the applications of electromechanical transducers. However, requirements of enhanced properties like high dielectric constants, low elastic moduli, high stretchability, and minimum viscous and dielectric losses are major challenges for actuator and generator applications. To enhance dielectric properties, particle‐filled DE can be prepared in the presence of an electric field during the curing process, which leads to aligned particles in a regular fashion. In this work, we develop a holistic experimental characterization approach to assess how particle alignments enhance mechanical, electrical and electro‐mechanical properties over the randomly particle filled composites. For that, a commercially available silicone polymer (Ecoflex) is used and filled with high dielectric constant barium titanate fillers. In order to substantiate electromechanical performance enhancements, mechanical, electrical, electro‐mechanical, and morphology experiments are conducted on both types of silicone composites. Dielectric composites prepared under an electric field during curing process outperform in almost all aspects of electromechanical tests. This comprehensive study provides a framework that will guide future dielectric composite preparations and electrical, mechanical, and electromechanical experiments especially for the oriented dipole fillers prepared under an electric field.

show abstract

The polarization relaxations and decreasing dielectric loss in (In0.5Ta0.5)0.1Ti0.9O2 ceramics via anion substitution

Xue,

Wang,

Kang

et al. 2024

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Internal Electric Field in Co-Doped BaTiO₃ With Co^2+/3+, Nb⁵⁺, Li⁺, and F⁻: Impact on Functional Properties and Charge Compensation With Niobium and Fluorine Ions

Cited by 3 publications

References 36 publications

Improved Properties of Doped BaTiO₃ Piezoelectric Ceramics

Improved Properties of Doped BaTiO₃ Piezoelectric Ceramics

Silicone composites cured under a high electric field: an electromechanical experimental study

The polarization relaxations and decreasing dielectric loss in (In0.5Ta0.5)0.1Ti0.9O2 ceramics via anion substitution

Contact Info

Product

Resources

About

Internal Electric Field in Co-Doped BaTiO3 With Co2+/3+, Nb5+, Li+, and F−: Impact on Functional Properties and Charge Compensation With Niobium and Fluorine Ions

Cited by 3 publications

References 36 publications

Improved Properties of Doped BaTiO3 Piezoelectric Ceramics

Improved Properties of Doped BaTiO3 Piezoelectric Ceramics

Silicone composites cured under a high electric field: an electromechanical experimental study

The polarization relaxations and decreasing dielectric loss in (In0.5Ta0.5)0.1Ti0.9O2 ceramics via anion substitution

Contact Info

Product

Resources

About

Internal Electric Field in Co-Doped BaTiO₃ With Co^2+/3+, Nb⁵⁺, Li⁺, and F⁻: Impact on Functional Properties and Charge Compensation With Niobium and Fluorine Ions

Improved Properties of Doped BaTiO₃ Piezoelectric Ceramics

Improved Properties of Doped BaTiO₃ Piezoelectric Ceramics