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Intrinsic correlation between β-relaxation and spatial heterogeneity in a metallic glass

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  • F. Zhu

    (State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University
    WPI Advanced Institute for Materials Research, Tohoku University)

  • H. K. Nguyen

    (WPI Advanced Institute for Materials Research, Tohoku University)

  • S. X. Song

    (State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University)

  • Daisman P. B. Aji

    (WPI Advanced Institute for Materials Research, Tohoku University)

  • A. Hirata

    (WPI Advanced Institute for Materials Research, Tohoku University)

  • H. Wang

    (WPI Advanced Institute for Materials Research, Tohoku University)

  • K. Nakajima

    (WPI Advanced Institute for Materials Research, Tohoku University)

  • M. W. Chen

    (State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University
    WPI Advanced Institute for Materials Research, Tohoku University)

Abstract

β-relaxation has long been attributed to localized motion of constituent molecules or atoms confined to isolated regions in glasses. However, direct experimental evidence to support this spatially heterogeneous scenario is still missing. Here we report the evolution of nanoscale structural heterogeneity in a metallic glass during β-relaxation by utilizing amplitude-modulation dynamic atomic force microscopy. The successive degeneration of heterogeneity during β-relaxation can be well described by the Kohlrausch–Williams–Watts equation. The characteristic relaxation time and activation energy of the heterogeneity evolution are in accord with those of excess enthalpy release by β-relaxation. Our study correlates β-relaxation with nanoscale spatial heterogeneity and provides direct evidence on the structural origins of β-relaxation in metallic glasses.

Suggested Citation

  • F. Zhu & H. K. Nguyen & S. X. Song & Daisman P. B. Aji & A. Hirata & H. Wang & K. Nakajima & M. W. Chen, 2016. "Intrinsic correlation between β-relaxation and spatial heterogeneity in a metallic glass," Nature Communications, Nature, vol. 7(1), pages 1-7, September.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms11516
    DOI: 10.1038/ncomms11516
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    Cited by:

    1. Yudong Cheng & Qun Yang & Jiangjing Wang & Theodoros Dimitriadis & Mathias Schumacher & Huiru Zhang & Maximilian J. Müller & Narges Amini & Fan Yang & Alexander Schoekel & Julian Pries & Riccardo Mazz, 2022. "Highly tunable β-relaxation enables the tailoring of crystallization in phase-change materials," Nature Communications, Nature, vol. 13(1), pages 1-9, December.

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