Thermally-stable high energy storage performances and large electrocaloric effect over a broad temperature span in lead-free BCZT ceramic.

44,45 With increasing temperature, the peak position and the intensity of the Raman modes present a decreasing trend, alongside with Raman modes broadening, which is similar to other ferroelectric materials. 44,46 A 2D colour map of Raman spectra of BCZT ceramic is illustrated in Fig. 2d .

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