Temperature-dependent R-curve behavior of the lead-free ferroelectric 0.615Ba(Zr0.2Ti0.8)O3–0.385(Ba0.7Ca0.3)TiO3 ceramic

Temperature‐Dependent Deformation and Dislocation Density in SrTiO3 (001) Single Crystals

“…To independently measure the Young's modulus as a function of temperature, a nondestructive resonant frequency and damping amplifier technique (RFDA, HT1750, IMCE nv, Genk, Belgium) was used . This technique measures the flexural vibration frequency and calculates the Young's modulus using the mass and dimensions of the sample . For these measurements, longer rectangular bar single‐crystal specimens were utilized with dimensions 2 mm × 2 mm × 25 mm, but still with (100) equivalent faces and [001] growth direction, as before.…”

Cytotoxicity, chemical stability, and surface properties of ferroelectric ceramics for biomaterials

“…Calcined powders of both systems were pressed into green bodies of 40 g with dimensions of (70 × 40 × 5) mm 3 . The procedure to compact such specimens has been described previously . While no binder was used for NBT–6BT, 2 g of binder (5 wt% Polyvinyl butyral and 95 wt% ethanol) were required for the green bodies of BZT–60BCT.…”

Ferroelastic domain switching and R‐curve behavior in lead zirconate titanate (Zr/Ti = 52/48)‐based ferroelectric ceramics

“…The crack growth resistance of lead zirconate titanate ceramics was determined using the single‐edge V‐notched beam (SEVNB) method in both poled and nonpoled materials to estimate the influence of the electrodes on crack propagation . The temperature‐dependent R ‐curve behavior of the lead‐free ferroelectric 0.615Ba(Zr 0.2 Ti 0.8 )O 3 ‐0.385(Ba 0.7 Ca 0.3 )TiO 3 ceramic was characterized using compact tension (CT) specimens from 25°C to 60°C . The crack growth resistance behavior of polycrystalline Pb(Zr 1− x Ti x )O 3 was also investigated by the CT method between 24°C and 140°C .…”

“…[9][10][11][12] Since many ferroelectric materials including lead zirconate titanate are simultaneously ferroelastic, their R-curve behaviors, which are related to the crack tip stress field-assisted (ie, ferroelastic or non-180° or 90°) domain switching, received considerable attention. Such as, the R-curve and stress-strain behaviors in a variety of ferroelastic polycrystalline ceramic compositions including Pb(Zr,Ti)O 3 , Na 0.5 Bi 4.5 Ti 4 O 15 and PbNb 2 O 6 and others were investigated in Ref. [13].…”

“…14 The temperature-dependent R-curve behavior of the lead-free ferroelectric 0.615Ba(Zr 0.2 Ti 0.8 )O 3 -0.385(Ba 0.7 Ca 0.3 )TiO 3 ceramic was characterized using compact tension (CT) specimens from 25°C to 60°C. 15 The crack growth resistance behavior of polycrystalline Pb(Zr 1−x Ti x )O 3 was also investigated by the CT method between 24°C and 140°C. 16 The phenomenon of ferroelasticity suggests that absorption of mechanical energy in domain switching (twinning) in the near stress field of a crack tip is a possible toughening mechanism, which has been identified in ferroelectric-ferroelastic lead zirconate titanate (Zr/Ti = 0.54/0.46) ceramics.…”