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Lattice strain-enhanced exsolution of nanoparticles in thin films

Author

Listed:
  • Hyeon Han

    (Pohang University of Science and Technology (POSTECH)
    Max Planck Institute of Microstructure Physics)

  • Jucheol Park

    (Gumi Electronics & Information Technology Research Institute)

  • Sang Yeol Nam

    (Gumi Electronics & Information Technology Research Institute
    Kumoh National Institute of Technology)

  • Kun Joong Kim

    (Pohang University of Science and Technology (POSTECH)
    Massachusetts Institute of Technology)

  • Gyeong Man Choi

    (Pohang University of Science and Technology (POSTECH)
    1Fcell Inc.)

  • Stuart S. P. Parkin

    (Max Planck Institute of Microstructure Physics)

  • Hyun Myung Jang

    (Pohang University of Science and Technology (POSTECH)
    Seoul National University)

  • John T. S. Irvine

    (University of St Andrews)

Abstract

Nanoparticles formed on oxide surfaces are of key importance in many fields such as catalysis and renewable energy. Here, we control B-site exsolution via lattice strain to achieve a high degree of exsolution of nanoparticles in perovskite thin films: more than 1100 particles μm−2 with a particle size as small as ~5 nm can be achieved via strain control. Compressive-strained films show a larger number of exsolved particles as compared with tensile-strained films. Moreover, the strain-enhanced in situ growth of nanoparticles offers high thermal stability and coking resistance, a low reduction temperature (550 °C), rapid release of particles, and wide tunability. The mechanism of lattice strain-enhanced exsolution is illuminated by thermodynamic and kinetic aspects, emphasizing the unique role of the misfit-strain relaxation energy. This study provides critical insights not only into the design of new forms of nanostructures but also to applications ranging from catalysis, energy conversion/storage, nano-composites, nano-magnetism, to nano-optics.

Suggested Citation

  • Hyeon Han & Jucheol Park & Sang Yeol Nam & Kun Joong Kim & Gyeong Man Choi & Stuart S. P. Parkin & Hyun Myung Jang & John T. S. Irvine, 2019. "Lattice strain-enhanced exsolution of nanoparticles in thin films," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-09395-4
    DOI: 10.1038/s41467-019-09395-4
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    Cited by:

    1. Hyeon Han & Yaolong Xing & Bumsu Park & Dmitry I. Bazhanov & Yeongrok Jin & John T. S. Irvine & Jaekwang Lee & Sang Ho Oh, 2022. "Anti-phase boundary accelerated exsolution of nanoparticles in non-stoichiometric perovskite thin films," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    2. Bo-Wen Zhang & Meng-Nan Zhu & Min-Rui Gao & Xiuan Xi & Nanqi Duan & Zhou Chen & Ren-Fei Feng & Hongbo Zeng & Jing-Li Luo, 2022. "Boosting the stability of perovskites with exsolved nanoparticles by B-site supplement mechanism," Nature Communications, Nature, vol. 13(1), pages 1-12, December.

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