Evolution of Strain in Heteroepitaxial Cadmium Carbonate Overgrowths on Dolomite

La Plante, Erika Callagon; Eng, Peter J.; Lee, Sang Soo; Sturchio, Neil C.; Nagy, Kathryn L.; Fenter, Paul

doi:10.1021/acs.cgd.7b01716

Title: Evolution of Strain in Heteroepitaxial Cadmium Carbonate Overgrowths on Dolomite

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Abstract

The evolution and accommodation of lattice strain in an epitaxial mineral film grown on an isostructural substrate were observed as a function of film thickness. Cadmium carbonate films (approximately CdCO₃ (otavite) in composition) were grown on the (104) surface of CaMg(CO₃)₂ (dolomite) from aqueous solutions that were supersaturated with respect to both pure otavite and Cd-rich (Cd_1-xCa_x)CO₃. Specular and non-specular X-ray reflectivity (XR) revealed that the structure and strain of the otavite overgrowths evolved in a manner that is fully consistent with a Stranski-Krastanov growth mode. Otavite films initially grew as coherently strained films, up to an average thickness of ~15 Å, with lateral compressive strains and an expansion of the vertical film lattice spacing resulting in a unit cell volume consistent with pure otavite. Thicker films (>15 Å) became incommensurate with the substrate, having lattice parameters that are indistinguishable from pure otavite. These results indicate that the evolution of these mineral films is controlled by epitaxy and are consistent with the growth of essentially pure otavite films. Lastly, these results provide a foundation for understanding the stability of thin-film overgrowths in the natural environment.

Authors:

La Plante, Erika Callagon ^[1]; Eng, Peter J. ^[2];

^[3]; Sturchio, Neil C. ^[4]; Nagy, Kathryn L. ^[1];

^[3]

Univ. of Illinois, Chicago, IL (United States). Dept. of Earth and Environmental Sciences
Univ. of Chicago, IL (United States). Center for Advanced Radiation Sources (CARS)
Argonne National Lab. (ANL), Argonne, IL (United States). Chemical Sciences and Engineering Division
Univ. of Delaware, Newark, DE (United States). Dept. of Geological Sciences

Publication Date:: Mon Apr 09 00:00:00 EDT 2018

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1460956

Grant/Contract Number:: AC02-06CH11357

Resource Type:: Accepted Manuscript

Journal Name:: Crystal Growth and Design

Additional Journal Information:: Journal Volume: 18; Journal Issue: 5; Journal ID: ISSN 1528-7483

Publisher:: American Chemical Society

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Cadmium; calcium carbonate; calcite; dolomite; heteroepitaxial growth

Citation Formats


                    La Plante, Erika Callagon, Eng, Peter J., Lee, Sang Soo, Sturchio, Neil C., Nagy, Kathryn L., and Fenter, Paul. Evolution of Strain in Heteroepitaxial Cadmium Carbonate Overgrowths on Dolomite.  United States: N. p., 2018. 
Web.  doi:10.1021/acs.cgd.7b01716.

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                    La Plante, Erika Callagon, Eng, Peter J., Lee, Sang Soo, Sturchio, Neil C., Nagy, Kathryn L., & Fenter, Paul. Evolution of Strain in Heteroepitaxial Cadmium Carbonate Overgrowths on Dolomite.  United States.  https://doi.org/10.1021/acs.cgd.7b01716

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                    La Plante, Erika Callagon, Eng, Peter J., Lee, Sang Soo, Sturchio, Neil C., Nagy, Kathryn L., and Fenter, Paul. Mon .  
"Evolution of Strain in Heteroepitaxial Cadmium Carbonate Overgrowths on Dolomite".  United States.  https://doi.org/10.1021/acs.cgd.7b01716.  https://www.osti.gov/servlets/purl/1460956.

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@article{osti_1460956,

  title        = {Evolution of Strain in Heteroepitaxial Cadmium Carbonate Overgrowths on Dolomite},

  author       = {La Plante, Erika Callagon and Eng, Peter J. and Lee, Sang Soo and Sturchio, Neil C. and Nagy, Kathryn L. and Fenter, Paul},

  abstractNote = {The evolution and accommodation of lattice strain in an epitaxial mineral film grown on an isostructural substrate were observed as a function of film thickness. Cadmium carbonate films (approximately CdCO3 (otavite) in composition) were grown on the (104) surface of CaMg(CO3)2 (dolomite) from aqueous solutions that were supersaturated with respect to both pure otavite and Cd-rich (Cd1-xCax)CO3. Specular and non-specular X-ray reflectivity (XR) revealed that the structure and strain of the otavite overgrowths evolved in a manner that is fully consistent with a Stranski-Krastanov growth mode. Otavite films initially grew as coherently strained films, up to an average thickness of ~15 Å, with lateral compressive strains and an expansion of the vertical film lattice spacing resulting in a unit cell volume consistent with pure otavite. Thicker films (>15 Å) became incommensurate with the substrate, having lattice parameters that are indistinguishable from pure otavite. These results indicate that the evolution of these mineral films is controlled by epitaxy and are consistent with the growth of essentially pure otavite films. Lastly, these results provide a foundation for understanding the stability of thin-film overgrowths in the natural environment.},

  doi          = {10.1021/acs.cgd.7b01716},

  journal      = {Crystal Growth and Design},

  number       = 5,

  volume       = 18,

  place        = {United States},

  year         = {Mon Apr 09 00:00:00 EDT 2018},

  month        = {Mon Apr 09 00:00:00 EDT 2018}

}

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