000161716 001__ 161716
000161716 005__ 20251017144630.0
000161716 0247_ $$2doi$$a10.1002/aelm.202400962
000161716 0248_ $$2sideral$$a144348
000161716 037__ $$aART-2025-144348
000161716 041__ $$aeng
000161716 100__ $$0(orcid)0000-0001-8303-932X$$aLafuerza, Sara
000161716 245__ $$aHigh‐quality epitaxial five‐layer aurivillius films with in‐plane ferroelectricity for electrocaloric cooling
000161716 260__ $$c2025
000161716 5060_ $$aAccess copy available to the general public$$fUnrestricted
000161716 5203_ $$aHigh‐quality purely c‐axis oriented epitaxial thin films of the Aurivillius phase Sr2Bi4Ti5O18 with n = 5 (Sr,Bi)TiO3 perovskite‐like layers, are grown on SrTiO3 substrates by pulsed laser deposition. The highest crystalline quality is obtained with a 20 wt.% Bi‐excess target and average stacking order values in the proximity of the ideal value n = 5 are attained for an optimum deposition temperature of 650 °C. Scanning transmission electron microscopy reveals regions with n ranging from 4 to 6 around an average thickness of n = 5, in agreement with the X‐ray diffraction analysis. Interdigital electrodes are used to probe the in‐plane polarization and survey the electrocaloric properties. A maximum adiabatic temperature change of ΔT ∼ 0.95 °C for an electric field of 150 kV cm−1 is observed at ≈135 °C. Larger values are expected at higher temperatures around the ferroelectric Curie temperature, TC. Since TC of Sr2Bi4Ti5O18 can be tuned by codoping, the findings pave the way toward a large electrocaloric effect at ambient temperature.
000161716 536__ $$9info:eu-repo/grantAgreement/ES/AEI/CEX2023-001263-S$$9info:eu-repo/grantAgreement/ES/DGA/E11-23R$$9info:eu-repo/grantAgreement/ES/DGA/E12-23R$$9info:eu-repo/grantAgreement/EC/H2020/101007825/EU/ULtra ThIn MAgneto Thermal sEnsor-Ing/ULTIMATE-I$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 101007825-ULTIMATE-I$$9info:eu-repo/grantAgreement/EC/H2020/101029019/EU/Exploring Aurivillius phases for Green Electrocaloric Refrigeration/EAGER$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 101029019-EAGER$$9info:eu-repo/grantAgreement/ES/MICINN/CEX2021-001214-S$$9info:eu-repo/grantAgreement/ES/MICINN/CEX2023-001286-S$$9info:eu-repo/grantAgreement/ES/MICINN/PID2021-123276OB-I00$$9info:eu-repo/grantAgreement/ES/MICINN/PID2021-124734OB-C21
000161716 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000161716 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000161716 700__ $$0(orcid)0000-0002-9706-3272$$aBlasco, Javier
000161716 700__ $$0(orcid)0000-0002-8028-9064$$aEvangelisti, Marco
000161716 700__ $$0(orcid)0000-0002-9029-1977$$aSubías, Gloria
000161716 700__ $$aGracia, David
000161716 700__ $$0(orcid)0000-0002-0111-8284$$aPardo, José Á.$$uUniversidad de Zaragoza
000161716 700__ $$aBarriuso, Eduardo
000161716 700__ $$aTorrelles, Xavier
000161716 700__ $$aPadilla-Pantoja, Jessica
000161716 700__ $$aCaicedo, José M.
000161716 700__ $$aSantiso, José
000161716 7102_ $$15001$$2065$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Cienc.Mater. Ingen.Metal.
000161716 773__ $$g(2025), 2400962 [10 pp.]$$pAdv. Electron. Mater.$$tAdvanced Electronic Materials$$x2199-160X
000161716 8564_ $$s2993098$$uhttps://zaguan.unizar.es/record/161716/files/texto_completo.pdf$$yVersión publicada
000161716 8564_ $$s2890287$$uhttps://zaguan.unizar.es/record/161716/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000161716 909CO $$ooai:zaguan.unizar.es:161716$$particulos$$pdriver
000161716 951__ $$a2025-10-17-14:25:53
000161716 980__ $$aARTICLE