Optical and electronic functionality arising from controlled defect formation in nanoscale complex oxide lateral epitaxy.

Autor: Liu R; Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA., Janicki TD; Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA., Marks SD; Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA., Gyan DS; Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA., Zuo P; Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA., Savage DE; Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA., Zhou T; Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL 60439, USA., Cai Z; Advanced Photon Source, Argonne National Laboratory, Lemont, IL 60439, USA., Holt M; Center for Nanoscale Materials, Argonne National Laboratory, Lemont, IL 60439, USA., Butun S; Northwestern University Micro/Nano Fabrication Facility, Northwestern University, Evanston, IL 60208, USA., Lu S; Northwestern University Micro/Nano Fabrication Facility, Northwestern University, Evanston, IL 60208, USA., Basit N; Northwestern University Micro/Nano Fabrication Facility, Northwestern University, Evanston, IL 60208, USA., Hu X; Northwestern University Atomic and Nanoscale Characterization Experimental Center, Northwestern University, Evanston, IL 60208, USA.; Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA., Abbott T; Northwestern University Atomic and Nanoscale Characterization Experimental Center, Northwestern University, Evanston, IL 60208, USA., Kabat N; Northwestern University Atomic and Nanoscale Characterization Experimental Center, Northwestern University, Evanston, IL 60208, USA., Li W; State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China., Li Q; State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China., Kelley KP; Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA., Vasudevan RK; Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA., Schmidt JR; Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA., Babcock SE; Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA., Evans PG; Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA.
Jazyk: angličtina
Zdroj: Science advances [Sci Adv] 2024 Jul 26; Vol. 10 (30), pp. eadk5509. Date of Electronic Publication: 2024 Jul 24.
DOI: 10.1126/sciadv.adk5509
Abstrakt: Epitaxial crystallization of complex oxides provides the means to create materials with precisely selected composition, strain, and orientation, thereby controlling their functionalities. Extending this control to nanoscale three-dimensional geometries can be accomplished via a three-dimensional analog of oxide solid-phase epitaxy, lateral epitaxial crystallization. The orientation of crystals within laterally crystallized SrTiO 3 systematically changes from the orientation of the SrTiO 3 substrate. This evolution occurs as a function of lateral crystallization distance, with a rate of approximately 50° μm -1 . The mechanism of the rotation is consistent with a steady-state stress of tens of megapascal over a 100-nanometer scale region near the moving amorphous/crystalline interface arising from the amorphous-crystalline density difference. Second harmonic generation and piezoelectric force microscopy reveal that the laterally crystallized SrTiO 3 is noncentrosymmetric and develops a switchable piezoelectric response at room temperature, illustrating the potential to use lateral crystallization to control the functionality of complex oxides.
Databáze: MEDLINE