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Title: Computational Approach for Epitaxial Polymorph Stabilization through Substrate Selection

Journal Article · · ACS Applied Materials and Interfaces
 [1];  [1];  [2];  [2];  [2];  [3]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Energy Technologies
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States). Materials Chemistry Science and Technology
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Energy Technologies; Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering

With the ultimate goal of finding new polymorphs through targeted synthesis conditions and techniques, we outline a computational framework to select optimal substrates for epitaxial growth using first principle calculations of formation energies, elastic strain energy, and topological information. To demonstrate the approach, we study the stabilization of metastable VO 2 compounds which provides a rich chemical and structural polymorph space. Here, we find that common polymorph statistics, lattice matching, and energy above hull considerations recommends homostructural growth on TiO 2 substrates, where the VO 2 brookite phase would be preferentially grown on the a-c TiO 2 brookite plane while the columbite and anatase structures favor the a-b plane on the respective TiO 2 phases. Overall, we find that a model which incorporates a geometric unit cell area matching between the substrate and the target film as well as the resulting strain energy density of the film provide qualitative agreement with experimental observations for the heterostructural growth of known VO 2 polymorphs: rutile, A and B phases. The minimal interfacial geometry matching and estimated strain energy criteria provide several suggestions for substrates and substrate-film orientations for the heterostructural growth of the hitherto hypothetical anatase, brookite, and columbite polymorphs. Our criteria serve as a preliminary guidance for the experimental efforts stabilizing new materials and/or polymorphs through epitaxy. The current screening algorithm is being integrated within the Materials Project online framework and data and hence publicly available.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Next Generation of Materials by Design: Incorporating Metastability (CNGMD)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231; AC36-089028308
OSTI ID:
1379356
Journal Information:
ACS Applied Materials and Interfaces, Vol. 8, Issue 20; ISSN 1944-8244
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 63 works
Citation information provided by
Web of Science

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Cited By (10)

Theory‐Guided Synthesis of a Metastable Lead‐Free Piezoelectric Polymorph journal May 2018
Accelerating the discovery of materials for clean energy in the era of smart automation journal April 2018
Topological Hourglass Dirac Semimetal in the Nonpolar Phase of Ag 2 BiO 3 journal November 2018
Electrical and Optical Properties of VO 2 Polymorphic Films Grown Epitaxially on Y-Stabilized ZrO 2 journal April 2018
Computational screening of Fe-Ta hard magnetic phases journal January 2020
Sharp contrast in the electrical and optical properties of vanadium Wadsley ( V m O 2 m + 1 , m > 1 ) epitaxial films selectively stabilized on (111)-oriented Y-stabilized Zr O 2 journal June 2019
Freezing water at constant volume and under confinement journal February 2020
Photo-sensitizing thin-film ferroelectric oxides using materials databases and high-throughput calculations journal January 2019
Computational screening of Fe-Ta hard magnetic phases text January 2019
Structure prediction of epitaxial inorganic interfaces by lattice and surface matching with Ogre journal July 2021

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