20.500.12556/DiRROS-19229 Synergetic boost of functional properties near critical end points in antiferroelectric systems The increase of the dielectric permittivity with an electric field and enhanced energy storage properties make antiferroelectrics very attractive for high-power electronic applications needed in emerging green energy technologies and neuromorphic computing platforms. Their exceptional functional properties are closely related to the electric field-induced antiferroelectric↔ferroelectric phase transition, which can be driven toward a critical end point by manipulation with an external electric field. The critical fluctuation of physical properties at the critical end point in ferroelectrics is a promising approach to improve their functional properties. Here, we demonstrate the existence of two critical end points in antiferroelectric ceramics with a ferroelectric-antiferroelectric-paraelectric phase sequence, using the model system Pb 0.99 Nb 0.02 [ ( Zr 0.57 Sn 0.43 ) 0.92 Ti 0.08 ] 0.98 O 3 . The critical fluctuation of the dielectric permittivity in the proximity of the antiferroelectric-to-paraelectric critical end point is responsible for the strong enhancement of the dielectric tunability (by a factor of > 2 ) measured at ≈ 395 K. The enhancement of the energy storage density at ≈ 370 K is related to the proximity of the ferroelectric-to-antiferroelectric critical end point. These findings open possibilities for material design and pave the way for the next generation of high-energy storage materials. electronic applications high-power electronic green energy electric field zelena energija aplikacije električna polja true false true American Physical Society ZDA Angleški jezik Slovenski jezik ©2023 American Physical Society Neznano 2024-07-10 04:54:26 2024-07-10 04:54:26 2024-07-11 03:34:32 0000-00-00 00:00:00 2023 0 0 Nasl. z nasl. zaslona; Opis vira z dne 27. 11. 2023; Str. 114407-114415 iss. 11 Vol. 7 Nov. 2023 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 2023-08-11 2023-10-17 2023-11-16 53 2475-9953 doi.org/10.1103/PhysRevMaterials.7.114407 173741315 https://journals.aps.org/prmaterials/abstract/10.1103/PhysRevMaterials.7.114407 1 b9c2a510-3e67-11ef-b487-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=26480 RAZ_Jurecic_Vida_2023.pdf RAZ_Jurecic_Vida_2023.pdf 1 A93E5FE2E0A2A819589FA6DE31E60BD9 b21ce9e92c8ae422779f91a2ef7d12a42901afa42d612b72c146002411da94ea 62987bd9-3e69-11ef-b487-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=26481 Institut Jožef Stefan 0 0 0