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Strain-arranged structure in amorphous films

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Abstract

Amorphous films [BaTiO3 (BTO), SrTiO3 (STO), SrRuO3] on substrates and self-supported films (BTO and STO) were produced by controlling the film/substrate adhesion energy (level of clamping). The stress value in an as-deposited film depends on the clamping level, which defines the stress relief mode. In highly stressed films, the stress abatement is achieved via plastic transformation resulting in formation of “the strain-arranged structure of elastic domains.” Film fractures and delamination occur if the stress magnitude is too high and exceeds the elastic limit of the material. If the stress magnitude is low, the conditions favorable for nucleation and crystallization can arise. Stress in self-supported films is relieved mainly via shape change during film preparation, and the conditions favorable for nucleation and crystallization in annealed self-supported films arise more frequently.

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ACKNOWLEDGMENTS

We thank Dr. G. Leitus for useful discussions, Dr. H. Cohen for the XPS measurement, and Dr. K. Gartsman for the SEM investigation. V.L. would like to thank Dr. Yu. Rosenberg for many important comments and discussions. This work received financial support from Prof. R. Tenne (Weizmann Institute of Science). AIF acknowledges the support of the U.S. DOE Grant No. DE-FG02-03ER15476. Beamline X18B at the NSLS is supported in part by the Synchrotron Catalysis Consortium, U.S. DOE Grant No. DE-FG02-05ER15688.

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Authors and Affiliations

  1. Department of Materials & Interfaces, Weizmann Institute of Science, Rehovot, 76100, Israel

    Vera Lyahovitskaya & Ilya Zon

  2. Department of Chemical Research Support, Weizmann Institute of Science, Rehovot, 76100, Israel

    Yishay Feldman & Alex Yoffe

  3. Physics Department, Yeshiva University, New York, New York, 10016, USA

    Anatoly I. Frenkel

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  1. Vera Lyahovitskaya
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  2. Yishay Feldman
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  3. Ilya Zon
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  4. Alex Yoffe
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  5. Anatoly I. Frenkel
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Correspondence to Vera Lyahovitskaya.

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Lyahovitskaya, V., Feldman, Y., Zon, I. et al. Strain-arranged structure in amorphous films. Journal of Materials Research 27, 2819–2828 (2012). https://doi.org/10.1557/jmr.2012.333

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  • DOI: https://doi.org/10.1557/jmr.2012.333

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