Relaxor behavior and tunable property of lead-free Li+-doped Ba0.9Ca0.1Zr0.2Ti0.8O3 ceramics

The validity of Mn element on enhanced energy storage performance and fatigue resistance of Mn-doped 0.7Na0.5Bi0.5TiO3–0.3Sr0.7Bi0.2TiO3 lead-free ferroelectric ceramics (BNT–BST–xMn) is certified by doping. The effects of Mn modification on the dielectric behavior, ferroelectric, energy storage properties, and AC impedance are comprehensively investigated. It is found that the average grain size of the ceramics modified by Mn additions is reduced slightly. Moreover, the relaxor properties are evidently enhanced with the increased Mn content. The AC impedance spectra can even better clarify the dielectric response and relaxor behavior. The results suggest that both of the dielectric response and relaxor behavior are determined by defects especially concentration of the oxygen vacancy. The superior energy storage properties are realized at x = 0.05 with an energy storage density (Wrec) of 1.33 J/cm3 as well as energy storage efficiency (η) of 86.2% at 100 kV/cm, accompanied with a superior thermal stability. BNT–BST–5Mn ceramics can maintain a stable energy storage performance within 106 fatigue cycles, indicating an excellent fatigue resistance.

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Enhanced dielectric, piezoelectric properties and strengthened relaxor behavior in K-modified Na0·5Bi0·5TiO3 lead-free ceramics

Ceramics International ◽

10.1016/j.ceramint.2020.06.187 ◽

2020 ◽

Vol 46 (15) ◽

pp. 24091-24096 ◽

Cited By ~ 1

Author(s):

Wenshuo Kang ◽

Zhanshen Zheng ◽

Yuanliang Li ◽

Rujie Zhao

Keyword(s):

Piezoelectric Properties ◽

Lead Free ◽

Relaxor Behavior ◽

Lead Free Ceramics

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Relaxor behavior and ferroelectric properties of Na0.5Bi0.5TiO3-K0.5Bi0.5TiO3-KNbO3 lead-free ceramics

Journal of Materials Science ◽

10.1007/s10853-005-0716-6 ◽

2005 ◽

Vol 40 (14) ◽

pp. 3625-3628 ◽

Cited By ~ 10

Author(s):

Yueming Li ◽

Wen Chen ◽

Qing Xu ◽

Jing Zhou

Keyword(s):

Ferroelectric Properties ◽

Lead Free ◽

Relaxor Behavior ◽

Lead Free Ceramics

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Energy storage properties and relaxor behavior of lead-free Ba1−xSm2x/3Zr0.15Ti0.85O3 ceramics

Dalton Transactions ◽

10.1039/c7dt03140h ◽

2017 ◽

Vol 46 (41) ◽

pp. 14341-14347 ◽

Cited By ~ 32

Author(s):

Zheng Sun ◽

Lingxia Li ◽

Shihui Yu ◽

Xinyu Kang ◽

Siliang Chen

Keyword(s):

Energy Storage ◽

Solid State ◽

Solid State Reaction ◽

Lead Free ◽

Relaxor Behavior ◽

Reaction Route ◽

Energy Storage Properties ◽

Solid State Reaction Route ◽

Storage Properties

Lead-free Ba1−xSm2x/3Zr0.15Ti0.85O3 (BSZT) ceramics were synthesized by a solid state reaction route.

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A NOVEL LEAD-FREE TRANSPARENT CERAMIC WITH HIGH ELECTRO-OPTIC COEFFICIENT

Functional Materials Letters ◽

10.1142/s1793604711001968 ◽

2011 ◽

Vol 04 (03) ◽

pp. 237-240 ◽

Cited By ~ 14

Author(s):

K. W. KWOK ◽

FALIANG LI ◽

DUNMIN LIN

Keyword(s):

Piezoelectric Properties ◽

Optical Scattering ◽

Lead Free ◽

Relaxor Behavior ◽

Hot Press ◽

Pure Perovskite Structure ◽

Fine Grained ◽

Near Ir ◽

Electro Optic ◽

Hot Press Sintering

A novel lead-free transparent electro-optic ceramic (K0.5Na0.5)0.95 Li0.05Nb0.95Bi0.05O3+ 2 mol % excess Bi2O3 has been fabricated by hot-press sintering. The ceramic possesses a dense, fine-grained and pure-perovskite structure. Owing to the decreases in optical anisotropy of the crystal structure and optical scattering by the fine grains, the ceramic becomes visually clear. It exhibits a high transmittance of 60% in the near-IR region as well as a high effective linear electro-optic coefficient of 102 pm V-1. Although a relaxor behavior is induced, the ceramic exhibits reasonably good ferroelectric and piezoelectric properties (d33 = 64 pC N-1).

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