Department of Chemistry

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 Department of Chemistry Research Research areas and groups Inorganic chemistry Amorphous Materials Laboratory Publications

Publications

2024

Unveiling the Boson Peaks in Amorphous Phase-Change Materials
J Moesgaard, T Fujita, S Wei
Journal of Physics: Condensed Matter, 37 025101 (2024)

Fragility crossover mediated by covalent-like electronic interactions in metallic liquids
Hui-Ru Zhang, Liang Gao, Yu-Hao Ye, Jia-Xin Zhang, Tao Zhang, Qing-Zhou Bu, Qun Yang, Zengwei Zhu, Shuai Wei, Haibin Yu
Materials Futures 3 025002 (2024)

Structural relaxation of amorphous phase change materials at room temperature
J Pries, C Stenz, S Wei, M Wuttig, P Lucas
Journal of Applied Physics 135 (13) (2024)

2023

Femtosecond atomic-scale X-ray photon correlation spectroscopy enables direct probing of relaxation dynamics in fragile liquid
Tomoki Fujita, Yanwen Sun, Haoyuan Li, Thies J Albert, Sanghoon Song, Takahiro Sato, Jens Moesgaard, Antoine Cornet, Peihao Sun, Ying Chen, Mianzhen Mo, Narges Amini, Fan Yang, Arune Makareviciute, Garrett Coleman, Pierre Lucas, Jan Peter Embs, Michael Sprung, Vincent Esposito, Joan Vila-Comamala, Nan Wang, Talgat Mamyrbayev, Christian David, Peter Zalden, Jerome Hastings, Beatrice Ruta, Paul Fuoss, Klaus Sokolowski-Tinten, Diling Zhu, Shuai Wei
arXiv preprint arXiv:2312.08613

Pressure-induced reversal of Peierls-like distortions elicits the polyamorphic transition in GeTe and GeSe.
T. Fujita, Y. Chen, Y. Kono, S. Takahashi, H. Kasai, D. Campi, M. Bernasconi, K. Ohara, H. Yumoto, T. Koyama, H. Yamazaki, Y. Senba, H. Ohashi, I. Inoue, Y. Hayashi, M. Yabashi, E. Nishibori, R. Mazzarello*, S. Wei*,
Nature Communications 14, 7851 (2023).

Phase-change memory
S Wei, M Wuttig, Y Cheng, J Pries, X Lu
US Patent 11,817,146

 

 

2022

(* corresponding author)    

  • Y. Cheng, Q. Yang, J. Wang, T. Dimitriadis, M. Schumacher, H. Zhang, M. J. Müller, N. Amini, F. Yang, A. Schoekel, J. Pries, R. Mazzarello*, M. Wuttig*, H.-B. Yu* and S. Wei*. Highly tunable β-relaxation enables the tailoring of crystallization in phase-change materials. Nature Communications. 13, 7352 (2022).
  •   Q. Yang, S. Wei, Y. Yu, H.-R. Zhang, L. Gao, Q.-Z. Bu, N. Amini, Y.-D. Cheng, F. Yang, A. Schoekel, H.-B. Yu, Structural length-scale of β relaxation in metallic glass. J. Chem. Phys. 157, 184504 (2022).

  •    J. Pries, C. Stenz, L. Schäfer, A. Gutsche, S. Wei, P. Lucas, M. Wuttig, Resistance Drift Convergence and Inversion in Amorphous Phase Change Materials. Advanced Functional Materials. 32, 2207194 (2022).

2021

(* corresponding author)    

  • *Lucas, Pierre; Martin, Steven W; Kieffer, John ; Poole, Peter H.; Wei, Shuai (2021). Charles Austen, 1933-2021. Journal of Non-Crystalline Solids, 568, https://doi.org/10.1016/j.jnoncrysol.2021.120869  
  • Persch, C., Müller, M. J., Yadav, A., Pries, J., Honné, N., Kerres, P., Wei, S., Tanaka, H., Fantini, P., Varesi, E., Pellizzer, F. & *Wuttig, M. (2021). The potential of chemical bonding to design crystallization and vitrification kinetics. Nature Communications, 12, [4978]. https://doi.org/10.1038/s41467-021-25258-3
  • *Pries, J., Sehringer, J. C., Wei, S., Lucas, P. & Wuttig, M. (2021). Glass transition of the phase change material AIST and its impact on crystallization. Materials Science in Semiconductor Processing, 134, [105990]. https://doi.org/10.1016/j.mssp.2021.105990
  • Amini, N., Pries, J., Cheng, Y., Persch, C., Wuttig, M., Stolpe, M. & *Wei, S. (2021). Thermodynamics and kinetics of glassy and liquid phase-change materials. Materials Science in Semiconductor Processing, 135, [106094]. https://doi.org/10.1016/j.mssp.2021.106094
  • Shi, J., *Ma, S., *Wei, S., Best, J. P., Stolpe, M. & Markert, B. (2021). Connecting structural defects to tensile failure in a 3D-printed fully-amorphous bulk metallic glass. Materials Science and Engineering A, 813, [141106]. https://doi.org/10.1016/j.msea.2021.141106
  • Pries, J., Yu, Y., Kerres, P., Haeser, M., Steinberg, S., Gladisch, F., Wei, S., Lucas, P. & *Wuttig, M. (2021). Approaching the Glass Transition Temperature of GeTe by Crystallizing Ge15Te85. Physica Status Solidi. Rapid Research Letters, 15(3), [2000478]. https://doi.org/10.1002/pssr.202000478
  • Chen, E-Y., Peng, S-X., Peng, L., Di Michiel, M., Vaughan, G. B. M., *Yu, Y., Yu, H-B., Ruta, B., Wei, S. & *Liu, L., (2021).  Glass-forming ability correlated with the liquid-liquid transition in Pd42.5Ni42.5P15 alloy.  Scripta Materialia. 193, 117-121. https://doi.org/10.1016/j.scriptamat.2020.10.042 

2020

(* corresponding author)    

  • Shi, J., *Ma, S., *Wei, S., Best, J. P., Stolpe, M., Beckmann, A., Mostafavi, S., Korte-Kerzel, S. & Markert, B. (2020). 3D pore structure characterization and hardness in a powder bed fusion-processed fully amorphous Zr-based bulk metallic glass. Materials Characterization, 162, [110178]. https://doi.org/10.1016/j.matchar.2020.110178
  • Pries, J., Wei, S., Hoff, F., *Lucas, P. & Wuttig, M. (2020). Control of effective cooling rate upon magnetron sputter deposition of glassy Ge15Te85. Scripta Materialia, 178, 223-226. https://doi.org/10.1016/j.scriptamat.2019.11.024
  • *Lucas, P., Wei, S. & Angell, C. A. (2020). Liquid-liquid phase transitions in glass-forming systems and their implications for memory technology. International Journal of Applied Glass Science, 11(2), 236-244. https://doi.org/10.1111/ijag.15109
  • Peng, S. X., Cheng, Y., Pries, J., *Wei, S., *Yu, H. B. & *Wuttig, M. (2020). Uncovering β-relaxations in amorphous phase-change materials. Science Advances, 6(2), [eaay6726]. https://doi.org/10.1126/sciadv.aay6726
  • *Wei, S., Persch, C., Stolpe, M., Evenson, Z., Coleman, G., Lucas, P. & *Wuttig, M. (2020). Violation of the Stokes–Einstein relation in Ge2Sb2Te5, GeTe, Ag4In3Sb67Te26, and Ge15Sb85, and its connection to fast crystallization. Acta Materialia, 195, 491-500. https://doi.org/10.1016/j.actamat.2020.05.044

    2019

    (* corresponding author)    

    • *Zalden, P., Quirin, F., Schumacher, M., Siegel, J., Wei, S., Koc, A., Nicoul, M., Trigo, M., Andreasson, P., Enquist, H., Shu, M. J., Pardini, T., Chollet, M., Zhu, D., Lemke, H., Ronneberger, I., Larsson, J., Lindenberg, A. M., Fischer, H. E. ... Sokolowski-Tinten, K. (2019). Femtosecond x-ray diffraction reveals a liquid–liquid phase transition in phase-change materials. Science, 364(6445), 1062-1067. https://doi.org/10.1126/science.aaw1773
    • *Wei, S., *Lucas, P. & *Angell, C. A. (2019). Phase-change materials: The view from the liquid phase and the metallicity parameter. MRS Bulletin, 44(9), 691-698. https://doi.org/10.1557/mrs.2019.207
    • Pries, J., Wei, S., *Wuttig, M. & Lucas, P. (2019). Switching between Crystallization from the Glassy and the Undercooled Liquid Phase in Phase Change Material Ge2Sb2Te5. Advanced Materials, 31(39), [1900784]. https://doi.org/10.1002/adma.201900784

    Earlier publications

    (* corresponding author)

    • *Wei, S., Evenson, Z., Stolpe, M., Lucas, P. & *Angell, C. A. (2018). Breakdown of the Stokes-Einstein relation above the melting temperature in a liquid phase-change material. Science Advances, 4(11), [eaat8632]. https://doi.org/10.1126/sciadv.aat8632
    • Wei, S., Coleman, G. J., Lucas, P. & *Angell, C. A. (2017). Glass Transitions, Semiconductor-Metal Transitions, and Fragilities in Ge-V-Te (V=As, Sb) Liquid Alloys: The Difference One Element Can Make. Physical Review Applied, 7(3), [034035]. https://doi.org/10.1103/PhysRevApplied.7.034035
    • *Wei, S., Stolpe, M., Gross, O., Hembree, W., Hechler, S., Bednarcik, J., Busch, R. & Lucas, P. (2017). Structural evolution on medium-range-order during the fragile-strong transition in Ge15Te85. Acta Materialia, 129, 259-267. https://doi.org/10.1016/j.actamat.2017.02.055
    • *Lucas, P., Coleman, G. J., Venkateswara Rao, M., Edwards, A. N., Devaadithya, C., Wei, S., Alsayoud, A. Q., Potter, B. G., Muralidharan, K. & Deymier, P. A. (2017). Structure of ZnCl2 Melt. Part II: Fragile-to-Strong Transition in a Tetrahedral Liquid. Journal of Physical Chemistry B, 121(49), 11210-11218. https://doi.org/10.1021/acs.jpcb.7b10857
    • *Stolpe, M., Jonas, I., Wei, S., Evenson, Z., Hembree, W., Yang, F., Meyer, A. & Busch, R. (2016). Structural changes during a liquid-liquid transition in the deeply undercooled Zr58.5Cu15.6Ni12.8Al10.3Nb2.8 bulk metallic glass forming melt. Physical Review B, 93(1), [014201]. https://doi.org/10.1103/PhysRevB.93.014201
    • Wei, S. (2015). Jumbled arrangement of atoms allows bulk metallic glasses to flow like honey. The Conversation. https://theconversation.com/jumbled-arrangement-of-atoms-allows-bulk-metallic-glasses-to-flow-like-honey-41011
    • *Wei, S., *Stolpe, M., Gross, O., Evenson, Z., Gallino, I., Hembree, W., Bednarcik, J., Kruzic, J. J. & Busch, R. (2015). Linking structure to fragility in bulk metallic glass-forming liquids. Applied Physics Letters, 106(18), [181901]. https://doi.org/10.1063/1.4919590
    • *Wei, S., Lucas, P. & Angell, C. A. (2015). Phase change alloy viscosities down to Tg using Adam-Gibbs-equation fittings to excess entropy data: A fragile-to-strong transition. Journal of Applied Physics, 118(3), [034903]. https://doi.org/10.1063/1.4926791
    • *Evenson, Z., Koschine, T., Wei, S., Gross, O., Bednarcik, J., Gallino, I., Kruzic, J. J., Rätzke, K., Faupel, F. & Busch, R. (2015). The effect of low-temperature structural relaxation on free volume and chemical short-range ordering in a Au49Cu26.9Si16.3Ag5.5Pd2.3 bulk metallic glass. Scripta Materialia, 103, 14-17. https://doi.org/10.1016/j.scriptamat.2015.02.026
    • *Evenson, Z., Naleway, S. E., Wei, S., Gross, O., Kruzic, J. J., Gallino, I., Possart, W., Stommel, M. & Busch, R. (2014). β relaxation and low-temperature aging in a Au-based bulk metallic glass: From elastic properties to atomic-scale structure. Physical Review B - Condensed Matter and Materials Physics, 89(17), [174204]. https://doi.org/10.1103/PhysRevB.89.174204
    • *Wei, S., Evenson, Z., Gallino, I. & Busch, R. (2014). The impact of fragility on the calorimetric glass transition in bulk metallic glasses. Intermetallics, 55, 138-144. https://doi.org/10.1016/j.intermet.2014.07.018
    • Wei, S., Yang, F., Bednarcik, J., Kaban, I., Shuleshova, O., Meyer, A. & Busch, R. (2014). Two liquid states in a strong bulk metallic glass-former: A liquid transforms itself. Photon Science 2013: Highlights and Annual Report (Deutsches Elektronen-Synchrotron DESY) (s. 56-57)  https://photon-science.desy.de/sites/site_photonscience/content/e62/e176422/e187503/e249369/e249370/infoboxContent249371/PhotonScienceReport2013_eng.pdf  
    • *Wei, S., Yang, F., Bednarcik, J., Kaban, I., Shuleshova, O., Meyer, A. & Busch, R. (2013). Liquid-liquid transition in a strong bulk metallic glass-forming liquid. Nature Communications, 4, [2083]. https://doi.org/10.1038/ncomms3083
    • *Wei, S., Yang, F., Bednarcik, J., Kaban, I., Meyer, A. & Busch, R. (2013). Polyamorphous transformation in bulk metallic glass-forming liquid and its implication to strong liquids. AIP Conference Proceedings (Bind 1518). AIP conference proceedings. https://doi.org/10.1063/1.4794577
    • Busch, R., Evenson, Z., Wei, S. & Gallino, I. (2013). Thermodynamics, kinetics and fragility of bulk metallic glass forming liquids. Fragility of Glass-forming Liquids; Hindustan Book Agency. https://arxiv.org/pdf/1405.2251.pdf  
    • Wei, S., Gallino, I., Busch, R. & *Angell, C. A. (2011). Glass transition with decreasing correlation length during cooling of Fe50Co50 superlattice and strong liquids. Nature Physics, 7(2), 178-182. https://doi.org/10.1038/nphys1823
    Revised 14.10.2024
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    Shuai Wei