scholarly journals High Pressure Apparatus for in situ X-ray Diffraction and Electrical Resistance Measurement at Low Temperature.

1998 ◽  
Vol 7 ◽  
pp. 1496-1498 ◽  
Author(s):  
J. Tang ◽  
T. Matsumoto ◽  
N. Môri
2009 ◽  
Vol 36 (11) ◽  
Author(s):  
Tomoo Katsura ◽  
Anton Shatskiy ◽  
M. A. Geeth M. Manthilake ◽  
Shuangmeng Zhai ◽  
Daisuke Yamazaki ◽  
...  

2009 ◽  
Vol 36 (16) ◽  
Author(s):  
Tomoo Katsura ◽  
Sho Yokoshi ◽  
Kazuaki Kawabe ◽  
Anton Shatskiy ◽  
M. A. Geeth M. Manthilake ◽  
...  

CrystEngComm ◽  
2014 ◽  
Vol 16 (32) ◽  
pp. 7397-7400 ◽  
Author(s):  
Joe Ridout ◽  
Michael R. Probert

Single-crystal X-ray diffraction has been used to elucidate the structure of two polymorphs of isopropyl alcohol, one grown through in situ cryo-crystallisation, the other through high-pressure crystallisation.


2009 ◽  
Vol 36 (1) ◽  
Author(s):  
Tomoo Katsura ◽  
Sho Yokoshi ◽  
Kazuaki Kawabe ◽  
Anton Shatskiy ◽  
M. A. Geeth M. Manthilake ◽  
...  

2010 ◽  
Vol 25 (2) ◽  
pp. 396-400 ◽  
Author(s):  
Andrew K. Stemshorn ◽  
Georgiy Tsoi ◽  
Yogesh K. Vohra ◽  
Stanislav Sinogeiken ◽  
Phillip M. Wu ◽  
...  

In this study, we report low temperature x-ray diffraction studies combined with electrical resistance measurements on single crystals of iron-based layered superconductor FeSe to a temperature of 10 K and a pressure of 44 GPa. The low temperature high pressure x-ray diffraction studies were performed using a synchrotron source and superconductivity at high pressure was studied using designer diamond anvils. At ambient temperature, the FeSe sample shows a phase transformation from a PbO-type tetragonal phase to a NiAs-type hexagonal phase at 10 ± 2 GPa. On cooling, a structural distortion from a PbO-type tetragonal phase to an orthorhombic Cmma phase is observed below 100 K. At a low temperature of 10 K, compression of the orthorhombic Cmma phase results in a gradual transformation to an amorphous phase above 15 GPa. The transformation to the amorphous phase is completed by 40 GPa at 10 K. A loss of superconductivity is observed in the amorphous phase and a dramatic change in the temperature behavior of electrical resistance indicates formation of a semiconducting state at high pressures and low temperatures. The formation of the amorphous phase is attributed to a kinetic hindrance to the growth of a hexagonal NiAs phase under high pressures and low temperatures.


2013 ◽  
Vol 98 (10) ◽  
pp. 1811-1816 ◽  
Author(s):  
S. Zhai ◽  
D. Yamazaki ◽  
W. Xue ◽  
L. Ye ◽  
C. Xu ◽  
...  

2002 ◽  
Vol 16 (01n02) ◽  
pp. 137-143
Author(s):  
P. PENG ◽  
Z. H. JIN ◽  
K. LU ◽  
Z. Q. HU

The spinodal decomposition processes in the rapidly solidified Cu-10aT%Co alloy aged at several temperatures have been investigated using an in-situ electrical resistance measurement method combining a slowly scanning x-ray diffraction technique. Based on the Cahn-Hilliard theory, the time-dependences of amplification factor of the concentration modulation R(β) at different aging temperatures were calculated, and the Co atomic concentration of Co-rich region and Co-depleted region in the aged alloy were also deduced. The results showed that the evolution of composition modulation in microstructure in Cu-10aT%Co alloy can be monitored and characterized by an in-situ electrical resistance measurement method if only the degree of phase decomposition at some aging temperature and aging time had been previously deteced.


Author(s):  
Rebecca Scatena ◽  
Michał Andrzejewski ◽  
Roger D Johnson ◽  
Piero Macchi

Through in-situ, high-pressure x-ray diffraction experiments we have shown that the homoleptic perovskite-like coordination polymer [(CH3)2NH2]Cu(HCOO)3 undergoes a pressure-induced orbital reordering phase transition above 5.20 GPa. This transition is distinct...


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