Electrical and mechanical properties of MgO added 0.5Ba(Zr0.2Ti0.8)O3–0.5(Ba0.7Ca0.3)TiO3 (BZT–0.5BCT) composite ceramics

Piezoelectricity and Thermophysical Properties of Ba0.90Ca0.10Ti0.96Zr0.04O3 Ceramics Modified with Amphoteric Nd3+ and Y3+ Dopants

“…Cavities were formed in the ceramic structure with excessive yttrium doping, because of which the densification of the ceramic initially increased slightly and subsequently decreased with increasing x . Moreover, a more impacted structure with transgranular fracture of the BCTZ-NY x ceramic with 0.18 mol% yttrium ( Figure 2 d) suggested a high fracture strength (K) (96.3 MPa, Table S1 ) [ 29 ].…”

“…The cross indicates the experimental intensity, the red line represents the calculated pattern, the blue vertical line shows the Bragg position, and the magenta line represents the difference plot; Figure S2: Raman spectra of the BCTZ-NY x ceramics with different yttrium contents ( x ); Figure S3: Temperature-dependence of the relative permittivity ( ε r ) and loss tangent (tan δ ) of the BCTZ-NY x ceramics with yttrium contents ( x ) of ( a ) 0, ( b ) 0.06, ( c ) 0.12, ( d ) 0.18, ( e ) 0.24, and ( f ) 0.30 mol% under different measuring frequencies; Figure S4: Plots of ln(1/ ε r − 1/ ε m ) versus ln( T − T m ) of the BCTZ-NY x ceramic at a frequency of 10 kHz; Figure S5: Coefficient of thermal expansion (CTE) of the BCTZ-NY x ceramic with an yttrium content of 0.18 mol% with increasing temperature; Table S1: Coefficient of thermal expansion ( CTE ; CTE 1 line at temperatures below 70 °C and CTE 2 line at temperatures above 200 °C) and fracture strength ( K ) of the BCTZ-NY x ceramics; Table S2: Curie–Weiss temperature ( T CW ), temperature at which the permittivity begins to follow the Curie–Weiss law ( T B ), temperature deviation (Δ T m ), Curie–Weiss constant ( C ), and diffuseness exponent ( γ ) of the BCTZ-NY x ceramic as a function of the yttrium content ( x ) at 10 kHz. References [ 29 , 54 ] are cited in the supplementary materials.…”