scholarly journals Electrical Conductivity of Cadmium Sulfide under High Pressure and High Temperature

1968 ◽  
Vol 17 (172) ◽  
pp. 47-51
Author(s):  
Jiro OSUGI ◽  
Kiyoshi SHIMIZU ◽  
Tokio NAKAMURA ◽  
Akifumi ONODERA
Keyword(s):  
Electrical Conductivity ◽  
High Pressure ◽  
High Temperature ◽  
Cadmium Sulfide

Experimental Study on the Electrical Conductivity of Pyroxene Andesite at High Temperature and High Pressure

2016 ◽  
Vol 174 (3) ◽  
pp. 1033-1041 ◽  
Author(s):  
KeShi Hui ◽  
LiDong Dai ◽  
HePing Li ◽  
HaiYing Hu ◽  
JianJun Jiang ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Experimental Study ◽  
High Pressure ◽  
High Temperature ◽  
Pyroxene Andesite

scholarly journals The Phase Transition and Dehydration in Epsomite under High Temperature and High Pressure

Crystals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 75 ◽  
Author(s):  
Linfei Yang ◽  
Lidong Dai ◽  
Heping Li ◽  
Haiying Hu ◽  
Meiling Hong ◽  
...  
Keyword(s):  
Phase Transition ◽  
Electrical Conductivity ◽  
High Pressure ◽  
High Temperature ◽  
Magnesium Sulfate ◽  
Room Temperature ◽  
Diamond Anvil Cell ◽  
Vibrational Modes ◽  
Diamond Anvil ◽  
T Phase

The phase stability of epsomite under a high temperature and high pressure were explored through Raman spectroscopy and electrical conductivity measurements in a diamond anvil cell up to ~623 K and ~12.8 GPa. Our results verified that the epsomite underwent a pressure-induced phase transition at ~5.1 GPa and room temperature, which was well characterized by the change in the pressure dependence of Raman vibrational modes and electrical conductivity. The dehydration process of the epsomite under high pressure was monitored by the variation in the sulfate tetrahedra and hydroxyl modes. At a representative pressure point of ~1.3 GPa, it was found the epsomite (MgSO4·7H2O) started to dehydrate at ~343 K, by forming hexahydrite (MgSO4·6H2O), and then further transformed into magnesium sulfate trihydrate (MgSO4·3H2O) and anhydrous magnesium sulfate (MgSO4) at higher temperatures of 373 and 473 K, respectively. Furthermore, the established P-T phase diagram revealed a positive relationship between the dehydration temperature and the pressure for epsomite.

Electrical conductivity measurements of periclase under high pressure and high temperature

2010 ◽  
Vol 405 (1) ◽  
pp. 53-56 ◽  
Author(s):  
Xiaoping Wu ◽  
Baohua Zhang ◽  
Junshan Xu ◽  
Tomoo Katsura ◽  
Shuangmeng Zhai ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
High Pressure ◽  
High Temperature ◽  
Conductivity Measurements
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