Thermodynamic guiding principles in selective synthesis of strontium iridate Ruddlesden-Popper epitaxial Films [electronic resource].
- Washington, D.C. : United States. Dept. of Energy. Office of Basic Energy Sciences, 2016. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
- Physical Description:
- Article numbers 036,102 : digital, PDF file
- Additional Creators:
- United States. Department of Energy. Office of Basic Energy Sciences and United States. Department of Energy. Office of Scientific and Technical Information
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- Free-to-read Unrestricted online access
- We demonstrate the selective fabrication of Ruddlesden-Popper (RP) type SrIrO<sub>3</sub>, Sr<sub>3</sub>Ir<sub>2</sub>O<sub>7</sub>, and Sr<sub>2</sub>IrO<sub>4</sub> epitaxialthin films from a single SrIrO<sub>3</sub> target using pulsed laser deposition(PLD). We identified that the growth conditions stabilizing each phase directly map onto the phase diagram expected from thermodynamic equilibria. This approach allows precise cation stoichiometry control as evidenced by the stabilization of single phase Sr<sub>3</sub>Ir<sub>2</sub>O<sub>7</sub> for the first time, overcoming the close thermodynamic stability between neighboring RP phases. Furthermore, despite the non-equilibrium nature of PLD, these results highlight the importance of thermodynamic guiding principles to strategically synthesize the targeted phase in complex oxide thin films.
- Published through SciTech Connect., 03/10/2016., "slac-pub--16485", APL Materials 4 3 ISSN 2166-532X AM, Kazunori Nishio; Harold Y. Hwang; Yasuyuki Hikita., and SLAC National Accelerator Lab., Menlo Park, CA (United States)
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