Energy storage and photoluminescence properties of Sm3+-doped Ba0.85Ca0.15Ti0.90Zr0.10O3 lead-free multifunctional ferroelectric ceramics
Sm3+-doped Ba0.85Ca0.15Ti0.90Zr0.10O3(BCTZ∶xSm3+,x=0.0％,0.2％,0.4％,0.6％,0.8％,1.0％,mole fraction)ceramics were synthesized using the conventional solid state reaction method,and their microstructure,ferroelectric-ity,energy storage performance,and photoluminescence(PL)properties were systematically investigated.The results showed that the mean grain size of the ceramics decreased obviously and the density increased significantly after the addition of Sm3+.All ceramics exhibited typical ferroelectric properties.Moreover,with the further increase of doping amount,the remanent polarization(Pr)gradually decreased to 8.432 μC·cm-2(BCTZ∶1.0％Sm3+),and the ferroelectricity was suppressed.The energy storage density of BCTZ:1.0％Sm3+ceramic was improved by ca.49.0％compared with that of pure BCTZ ceramic.In addition,BCTZ∶xSm3+ceramics exhibit strong orange-red lumines-cence at about 596 nm under light excitation at 408 nm,and the PL intensity can be adjusted by 449％.
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