【摘 要】
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As a prototype material of colossal barocaloric effects,neopentylglycol is investigated by combining high-precision differential scanning calorimetric measurement and high-energy x-ray diffraction measurement.The diffraction data at con-stant temperatures
【机 构】
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Shenyang National Laboratory(SYNL)for Materials Science,Institute of Metal Research,Chinese Academy
论文部分内容阅读
As a prototype material of colossal barocaloric effects,neopentylglycol is investigated by combining high-precision differential scanning calorimetric measurement and high-energy x-ray diffraction measurement.The diffraction data at con-stant temperatures indicate a first-order phase transition with thermal hysteresis as well as the phase transition asymmetry,specifically,the phase transition is completed faster at cooling than at heating.The analysis of resulting pair distribution function confirms the intermolecular disorder in the high-temperature phase.The phase transition asymmetry is quantita-tively characterized by time-resolved x-ray diffraction,which is in agreement with the thermal measurement.Also,such an asymmetry is observed to be suppressed at high pressures.
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