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Title: Thermodynamic guiding principles in selective synthesis of strontium iridate Ruddlesden-Popper epitaxial films

Abstract

We demonstrate the selective fabrication of Ruddlesden-Popper (RP) type SrIrO3, Sr3Ir2O7, and Sr2IrO4 epitaxialthin films from a single SrIrO3 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 Sr3Ir2O7 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.

Authors:
; ;
Publication Date:
Research Org.:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1241409
Alternate Identifier(s):
OSTI ID: 1239634; OSTI ID: 1420553
Report Number(s):
SLAC-PUB-16485
Journal ID: ISSN 2166-532X
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Published Article
Journal Name:
APL Materials
Additional Journal Information:
Journal Name: APL Materials Journal Volume: 4 Journal Issue: 3; Journal ID: ISSN 2166-532X
Publisher:
American Institute of Physics
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; thin film growth; x-ray diffraction; pulsed laser deposition; epitaxy; metallic thin films

Citation Formats

Nishio, Kazunori, Hwang, Harold Y., and Hikita, Yasuyuki. Thermodynamic guiding principles in selective synthesis of strontium iridate Ruddlesden-Popper epitaxial films. United States: N. p., 2016. Web. doi:10.1063/1.4943519.
Nishio, Kazunori, Hwang, Harold Y., & Hikita, Yasuyuki. Thermodynamic guiding principles in selective synthesis of strontium iridate Ruddlesden-Popper epitaxial films. United States. https://doi.org/10.1063/1.4943519
Nishio, Kazunori, Hwang, Harold Y., and Hikita, Yasuyuki. Tue . "Thermodynamic guiding principles in selective synthesis of strontium iridate Ruddlesden-Popper epitaxial films". United States. https://doi.org/10.1063/1.4943519.
@article{osti_1241409,
title = {Thermodynamic guiding principles in selective synthesis of strontium iridate Ruddlesden-Popper epitaxial films},
author = {Nishio, Kazunori and Hwang, Harold Y. and Hikita, Yasuyuki},
abstractNote = {We demonstrate the selective fabrication of Ruddlesden-Popper (RP) type SrIrO3, Sr3Ir2O7, and Sr2IrO4 epitaxialthin films from a single SrIrO3 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 Sr3Ir2O7 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.},
doi = {10.1063/1.4943519},
journal = {APL Materials},
number = 3,
volume = 4,
place = {United States},
year = {Tue Mar 01 00:00:00 EST 2016},
month = {Tue Mar 01 00:00:00 EST 2016}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1063/1.4943519

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