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Title: Seeded Lateral Solid-Phase Crystallization of the Perovskite Oxide SrTiO 3

Abstract

Crystallization from an amorphous precursor presents a new route to control the properties of complex oxides by selecting their nanoscale morphology. A key challenge in crystal growth from the amorphous form is to select the locations of nucleation and the crystallographic orientation of the resulting crystals. Nucleation sites for crystallization of the prototypical perovskite complex oxide SrTiO 3 (STO) from its amorphous form can be reproducibly introduced using nanoscale seed crystals. The results of two seeding strategies are reported here: (i) SrRuO 3 (SRO) (001)-oriented nanomembranes and (ii) STO nanocrystalline seeds. Amorphous STO crystallizes laterally over distances of several microns from the seeds before encountering separately nucleated crystals. The lateral crystallization rates for both types of seeding methods are close to the values measured in solidphase epitaxy (SPE) of STO on single-crystal substrates. The lateral crystallization distances along different crystallographic orientations are equal, indicating that the lateral crystallization rate is isotropic. The isotropic crystallization suggests that the rate-limiting steps for crystallization occur within the amorphous STO away from the amorphous/crystalline interface. In addition to the lateral crystallization, STO crystallizes on top of the planar SRO nanomembrane seeds via SPE, forming partially relaxed [001]-oriented heteroepitaxial STO layers. The in-plane orientation ofmore » laterally crystallized STO near the SRO nanomembrane seeds exhibits overall polycrystallinity with regions in which micron-scale grains of laterally crystallized STO share the same in-plane orientation as the SRO nanomembrane seeds. Crystallization from seed crystals provides opportunities to create a wide range of other perovskite oxides in nanoscale geometries.« less

Authors:
 [1];  [1];  [1];  [1];  [1];  [2];  [1];  [3];  [3];  [3];  [3];  [1]; ORCiD logo [1]
  1. Univ. of Wisconsin, Madison, WI (United States)
  2. European Synchrotron Radiation Facility (ESRF), Grenoble (France)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1510079
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Physical Chemistry. C
Additional Journal Information:
Journal Volume: 123; Journal Issue: 12; Journal ID: ISSN 1932-7447
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; SrTiO3; complex oxide; crystal seeds; lateral solid-phase crystallization; nanocrystal; solid-phase epitaxy

Citation Formats

Chen, Yajin, Tilka, Jack A., Ahn, Youngjun, Park, Joonkyu, Pateras, Anastasios, Zhou, Tao, Savage, Donald E., McNulty, Ian, Holt, Martin V., Paskiewicz, Deborah M., Fong, Dillon D., Kuech, Thomas F., and Evans, Paul G. Seeded Lateral Solid-Phase Crystallization of the Perovskite Oxide SrTiO3. United States: N. p., 2019. Web. doi:10.1021/acs.jpcc.9b00078.
Chen, Yajin, Tilka, Jack A., Ahn, Youngjun, Park, Joonkyu, Pateras, Anastasios, Zhou, Tao, Savage, Donald E., McNulty, Ian, Holt, Martin V., Paskiewicz, Deborah M., Fong, Dillon D., Kuech, Thomas F., & Evans, Paul G. Seeded Lateral Solid-Phase Crystallization of the Perovskite Oxide SrTiO3. United States. doi:10.1021/acs.jpcc.9b00078.
Chen, Yajin, Tilka, Jack A., Ahn, Youngjun, Park, Joonkyu, Pateras, Anastasios, Zhou, Tao, Savage, Donald E., McNulty, Ian, Holt, Martin V., Paskiewicz, Deborah M., Fong, Dillon D., Kuech, Thomas F., and Evans, Paul G. Wed . "Seeded Lateral Solid-Phase Crystallization of the Perovskite Oxide SrTiO3". United States. doi:10.1021/acs.jpcc.9b00078.
@article{osti_1510079,
title = {Seeded Lateral Solid-Phase Crystallization of the Perovskite Oxide SrTiO3},
author = {Chen, Yajin and Tilka, Jack A. and Ahn, Youngjun and Park, Joonkyu and Pateras, Anastasios and Zhou, Tao and Savage, Donald E. and McNulty, Ian and Holt, Martin V. and Paskiewicz, Deborah M. and Fong, Dillon D. and Kuech, Thomas F. and Evans, Paul G.},
abstractNote = {Crystallization from an amorphous precursor presents a new route to control the properties of complex oxides by selecting their nanoscale morphology. A key challenge in crystal growth from the amorphous form is to select the locations of nucleation and the crystallographic orientation of the resulting crystals. Nucleation sites for crystallization of the prototypical perovskite complex oxide SrTiO3 (STO) from its amorphous form can be reproducibly introduced using nanoscale seed crystals. The results of two seeding strategies are reported here: (i) SrRuO3 (SRO) (001)-oriented nanomembranes and (ii) STO nanocrystalline seeds. Amorphous STO crystallizes laterally over distances of several microns from the seeds before encountering separately nucleated crystals. The lateral crystallization rates for both types of seeding methods are close to the values measured in solidphase epitaxy (SPE) of STO on single-crystal substrates. The lateral crystallization distances along different crystallographic orientations are equal, indicating that the lateral crystallization rate is isotropic. The isotropic crystallization suggests that the rate-limiting steps for crystallization occur within the amorphous STO away from the amorphous/crystalline interface. In addition to the lateral crystallization, STO crystallizes on top of the planar SRO nanomembrane seeds via SPE, forming partially relaxed [001]-oriented heteroepitaxial STO layers. The in-plane orientation of laterally crystallized STO near the SRO nanomembrane seeds exhibits overall polycrystallinity with regions in which micron-scale grains of laterally crystallized STO share the same in-plane orientation as the SRO nanomembrane seeds. Crystallization from seed crystals provides opportunities to create a wide range of other perovskite oxides in nanoscale geometries.},
doi = {10.1021/acs.jpcc.9b00078},
journal = {Journal of Physical Chemistry. C},
number = 12,
volume = 123,
place = {United States},
year = {2019},
month = {2}
}

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This content will become publicly available on February 27, 2020
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