Accelerating ferroic ageing dynamics upon cooling
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am2016152.pdf
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Author(s)
Zhang, Junyan
Mao, Yunwei
Wang, Dong
Li, Ju
Wang, Yunzhi
Date Issued
October 2016
Journal
NPG Asia Materials
Publisher
Springer Nature
Citation
Zhang, Junyan, Yunwei Mao, Dong Wang, Ju Li, and Yunzhi Wang. “Accelerating Ferroic Ageing Dynamics Upon Cooling.” NPG Asia Materials 8, no. 10 (October 2016): e319–e319.
Version
Final published version
Abstract
Once a structural glass is formed, its relaxation time will increase exponentially with decreasing temperature. Thus, the glass has little chance of transforming into a crystal upon further cooling to zero Kelvin. However, a spontaneous transition upon cooling from amorphous to long-range ordered ferroic states has been observed experimentally in ferroelastic, ferroelectric and ferromagnetic materials. The origin for this obvious discrepancy is discussed here conceptually. We present a combined theoretical and numerical study of this phenomenon and show that the diffusive and displacive atomic processes that take place in structural glass and amorphous ferroics, respectively, lead to markedly different temperature-dependent relaxation behaviors, one being ‘colder is slower’ and the other being ‘colder is faster’.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Terms of Use
Creative Commons Attribution 4.0 International License
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DOI of Published Version
http://dx.doi.org/10.1038/AM.2016.152
