Exploration of the best reference material on anelastic measurement by cyclic loading under high pressure
Exploration of the best reference material on anelastic measurement by cyclic loading under high pressure
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DOI：
10.1080/08957959.2021.2013834
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发表时间：
2021-12-10
影响因子：
2
通讯作者：
Higo, Yuji
中科院分区：
文献类型：
--
作者：
Liu, Chao;Yoshino, Takashi;Higo, Yuji
通过同步加速器设施的原位 X 射线观察，开发了高压循环加载的滞弹性测量。在该方法中，参考材料是精确确定未知材料的衰减和模量的关键因素。我们比较了三种类型的参考材料（致密多晶氧化铝、平行于c轴的氧化铝单晶和柔性石墨）在3 GPa的压力和1173~1373 K之间的温度范围内的性能。参考材料与样品之间应变的相位滞后表明，柔性石墨在各个时期的衰减小于致密多晶氧化铝和氧化铝单晶。应变比表明柔性石墨更加柔软，可以在有限的位移内产生可测量的应变。柔性石墨作为参考材料更适合探测高压下地幔矿物相对较低的能量色散。
Anelastic measurement by cyclic loading under high pressure has been developed by means of in situ X-ray observation at a synchrotron facility. In this method, the reference material is a key factor to precisely determine attenuation and moduli of unknown materials. We compared the performance of three types of reference materials (dense polycrystalline alumina, alumina single-crystal parallel to c-axis, and flexible graphite) under the pressure of 3 GPa and the temperature range between 1173 and 1373 K. The phase lags of strain between reference materials and samples show that the flexible graphite is less attenuated than dense polycrystalline alumina and alumina single crystal in various periods. The strain ratios show that the flexible graphite is much softer and can produce the measurable strain in the limited displacement. The flexible graphite, as reference material, is more excellent to detect the relatively lower energy dispersion of mantle minerals at high pressure.