88493 20200716101553.0 doi 10.1002/adfm.201901984 sideral 115887 ART-2019-115887 eng Ferreiro-Vila, E. Room-Temperature AFM Electric-Field-Induced Topotactic Transformation between Perovskite and Brownmillerite SrFeOx with Sub-Micrometer Spatial Resolution 2019 Access copy available to the general public Unrestricted Reversible structural transformations between perovskite (PV) ABO3- d and brownmillerite (BM) ABO2.5 (A = Ca2+, Sr2+; B = Fe4+/3, Co4+/3+) oxides can be induced by topotactic oxygen exchange at moderate temperatures under reducing/oxidizing conditions. The combination of a large oxide-ion conductivity and a small free energy difference between the 4+/3+ oxidation states of many 3d transition metal ions enables these topotactic transformations. Herein, it is demonstrated that the electric field produced by a voltage-biased atomic force microscopy tip can induce such transformation between PV SrFeO3- d and BM SrFeO2.5 at room temperature and with sub-micrometer spatial resolution. Interestingly, the structural transformation is kept after the electric field is removed, allowing a nonvolatile control of the local chemical, electrical, optical, and magnetic properties. Thus, the results presented in this paper open the door for the fabrication of stable ionic-based devices through the electric field patterning of different crystallographic phases. info:eu-repo/grantAgreement/EC/H2020/734187/EU/Spin conversion, logic storage in oxide-based electronics/SPICOLOST This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 734187-SPICOLOST info:eu-repo/grantAgreement/ES/MINECO/MAT2016-80762-R info:eu-repo/grantAgreement/ES/MINECO/MAT2017-82970-C2-2-R info:eu-repo/semantics/openAccess by-nc http://creativecommons.org/licenses/by-nc/3.0/es/ 16.836 2019 CHEMISTRY, PHYSICAL 7 / 158 = 0.044 2019 Q1 T1 MATERIALS SCIENCE, MULTIDISCIPLINARY 13 / 314 = 0.041 2019 Q1 T1 NANOSCIENCE & NANOTECHNOLOGY 6 / 103 = 0.058 2019 Q1 T1 PHYSICS, CONDENSED MATTER 4 / 69 = 0.058 2019 Q1 T1 CHEMISTRY, MULTIDISCIPLINARY 10 / 177 = 0.056 2019 Q1 T1 PHYSICS, APPLIED 7 / 154 = 0.045 2019 Q1 T1 5.875 2019 Biomaterials 2019 Q1 Chemistry (miscellaneous) 2019 Q1 Condensed Matter Physics 2019 Q1 Nanoscience and Nanotechnology 2019 Q1 Electronic, Optical and Magnetic Materials 2019 Q1 Materials Science (miscellaneous) 2019 Q1 Electrochemistry 2019 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Blanco-Canosa, S. (orcid)0000-0003-0271-8713 Lucas del Pozo, I. Universidad de Zaragoza Vasili, H.B. (orcid)0000-0002-6761-6171 Magén, C. Universidad de Zaragoza (orcid)0000-0002-4599-3013 Ibarra, A. Universidad de Zaragoza Rubio-Zuazo, J. Castro, G.R. (orcid)0000-0003-3724-508X Morellón, L. Universidad de Zaragoza Rivadulla, F. 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 29, 48 (2019), 1901984 [8 pp] Adv. funct. mater. Advanced Functional Materials 1616-301X 2273624 http://zaguan.unizar.es/record/88493/files/texto_completo.pdf Postprint 366529 http://zaguan.unizar.es/record/88493/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:88493 articulos driver 2020-07-16-09:47:47 ARTICLE