TY - JOUR
T1 - Slow dynamics of supercooled liquid revealed by Rayleigh scattering of Mössbauer radiation method in time domain
AU - Saito, Makina
AU - Battistoni, Andrea
AU - Kitao, Shinji
AU - Kobayashi, Yasuhiro
AU - Kurokuzu, Masayuki
AU - Yoda, Yoshitaka
AU - Seto, Makoto
N1 - Funding Information:
Acknowledgments We thank S. Kishimoto (High Energy Accelerator Research Organization) for the development of detectors. We thank T. Kanaya and R. Inoue (Institute for Chemical Research, Kyoto University) for DSC measurement and discussions. We are also grateful to Dr. R. Masuda (Research Reactor Institute, Kyoto University) for his careful reading of the manuscript. This experiment was performed with the approval of the Japan Synchrotron Radiation Research Institute (Power User Priority Program No. 2010A-2011A0086, 2012A and 2012B, proposal No. 2012B1467 and 2013A1445). This work was supported by JSPS KAKENHI (Grant-in-Aid for Scientific Research (S)) Grant Number 24221005.
PY - 2014/4
Y1 - 2014/4
N2 - Characteristic relaxation times τ of the microscopic correlation in o-terphenyl and glycerol were obtained by a time-domain interferometry method using nuclear resonant scattering of synchrotron radiation. From the temperature dependence of τ, a new decoupling temperature 278 K, which is below the conventional decoupling temperature 290 K, was obtained for o-terphenyl. Furthermore, we found a liquid-like relation between τ and q (momentum transfer) as τ ∝ q-2 at 285 K in o-terphenyl and 260 and 265 K in glycerol. However, an anomalous q dependence of the slow β relaxation time, τ ∝ q-2.9 and q -3.8, was observed in deeply supercooled (265 K) and glass (240 K) states, respectively, in o-terphenyl, indicating specially restricted dynamics of the slow β process.
AB - Characteristic relaxation times τ of the microscopic correlation in o-terphenyl and glycerol were obtained by a time-domain interferometry method using nuclear resonant scattering of synchrotron radiation. From the temperature dependence of τ, a new decoupling temperature 278 K, which is below the conventional decoupling temperature 290 K, was obtained for o-terphenyl. Furthermore, we found a liquid-like relation between τ and q (momentum transfer) as τ ∝ q-2 at 285 K in o-terphenyl and 260 and 265 K in glycerol. However, an anomalous q dependence of the slow β relaxation time, τ ∝ q-2.9 and q -3.8, was observed in deeply supercooled (265 K) and glass (240 K) states, respectively, in o-terphenyl, indicating specially restricted dynamics of the slow β process.
KW - Nuclear resonant scattering
KW - Slow dynamics
KW - Supercooled liquid
KW - Time-domain interferometry method
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U2 - 10.1007/s10751-014-1008-9
DO - 10.1007/s10751-014-1008-9
M3 - Article
AN - SCOPUS:84901245320
SN - 0304-3843
VL - 226
SP - 629
EP - 636
JO - Hyperfine Interactions
JF - Hyperfine Interactions
IS - 1-3
ER -