Temperature Dependence on Ferroelectric, Energy Storage Density, and Electric Field-Induced Strain Response of Lead-Free Bi0.485(Na0.388K0.097)Ba0.021Sr0.009TiO3 Ceramics. Issue 201 (2nd September 2019)

• Record Type: Journal Article
• Authors: Jaita, Pharatree; Lertcumfu, Narumon; Rujijanagul, Gobwute
• Is Part Of: Integrated ferroelectrics. Issue 201(2019)
• Page Start: 142
• Page End: 154
• Publication Date: 2019-09-02
• Subjects: BNKT-based lead-free ceramics -- sintering temperature -- ferroelectric -- energy storage density -- electric field-induced strain response; Ferroelectric devices -- Periodicals; Integrated circuits -- Periodicals; 537.244805
• DOI: 10.1080/10584587.2019.1668698
• Languages: English
• ISSNs: 1058-4587

Abstract

Abstract: In this research, Bi0.485 (Na0.388 K0.097 )Ba0.021 Sr0.009 TiO3 or BNKBSrT ceramic sintered at various temperatures from 1100 °C to 1150 °C were investigated. The optimum density (5.80 g/cm 3 ), mechanical ( HK = 5.3 GPa, HV = 4.1 GPa, E = 62 GPa, and KIC = 1.35 MPa m 1/2 ), dielectric ( εr = 1525, tanδ = 0.0566), piezoelectric ( d 33 = 172 pC/N, g 33 = 12 × 10 −3 Vm/N), electric field-induced strain ( S max = 0.32%, d *33 = S max / E max = 640 pm/V, Q 33 = 0.0340 m 4 /C 2 ), and energy storage ( W = 0.55 J/cm 3, η = 67.2% @ 150 °C) were obtained for the ceramic sintered at 1125 °C.