Structural, dielectric and electrocaloric properties of (Ba0.85Ca0.15)(Ti0.9Zr0.1−xSnx)O3 ceramics elaborated by sol–gel method

Improved energy storage and electrocaloric properties of lead-free Ba0.85Ca0.15Zr0.1Ti0.9O3 ceramic

“…The coexistence of orthorhombic and tetragonal phases indicates the formation of BCZT ceramic at the morphotropic phase boundary (MPB). The coexistence of tetragonal and orthorhombic phases at room temperature was also reported in many reports [16], [28]. The data of XRD was analyzed by Rietveld refinement, which was achieved by using a combination of tetragonal symmetry with space group P4mm and orthorhombic symmetry with space group Pmm2 (χ 2 =1.86, Rp=17.1 and Rwp=13.5).…”

Robust magnetic energy harvesting with flexible lead-free poly(vinylidene fluoride)-Ba0.85Ca0.15Ti0.9Zr0.1O3 fibers and Metglas-based magnetoelectric composites

“…The characteristic Raman bands were observed, in excellent agreement with previous reports. 35 Notably, the distinctive peaks of the ferroelectric long-range order in the tetragonal phase were observed in the modes B 1 + E (TO + LO) and A 1 (LO 3 ) + E(LO 3 ) at around 300 and 720 cm −1 , respectively. Additionally, the presence of the A 1 (LO) mode at approximately 200 cm −1 suggests the coexistence of orthorhombic and tetragonal phases, thus corroborating the XRD findings.…”

“…Additionally, the presence of the A 1 (LO) mode at approximately 200 cm −1 suggests the coexistence of orthorhombic and tetragonal phases, thus corroborating the XRD ndings. 35 In Fig. 1c, the SEM micrographs depict the BCZT powder.…”