Post-Rh2O3(II)transition and the high pressure-temperature phase diagram of gallia: A first-principles and x-ray diffraction study

2007 ◽  
Vol 76 (17) ◽  
Author(s):  
Taku Tsuchiya ◽  
Hitoshi Yusa ◽  
Jun Tsuchiya
Keyword(s):  
Phase Diagram ◽  
High Pressure ◽  
Diffraction Study ◽  
First Principles ◽  
Temperature Phase ◽  
X Ray Diffraction ◽  
X Ray ◽  
Temperature Phase Diagram

Pressure-temperature phase diagram ofLiBH4: Synchrotron x-ray diffraction experiments and theoretical analysis

2008 ◽  
Vol 77 (17) ◽  
Author(s):  
V. Dmitriev ◽  
Y. Filinchuk ◽  
D. Chernyshov ◽  
A. V. Talyzin ◽  
A. ilewski ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Theoretical Analysis ◽  
Temperature Phase ◽  
X Ray Diffraction ◽  
X Ray ◽  
Temperature Phase Diagram

TWO-PHASE NUCLEI IN PARAELECTRIC PHASE OF Pb1-x(Li1/2La1/2)x(Zr1-yTiy)O3 SOLID SOLUTIONS

2001 ◽  
Vol 15 (24n25) ◽  
pp. 3366-3368
Author(s):  
V. L. SOBOLEV ◽  
V. M. ISHCHUK
Keyword(s):  
Phase Transition ◽  
Phase Diagram ◽  
Paraelectric Phase ◽  
Temperature Phase ◽  
X Ray Diffraction ◽  
Two Phase ◽  
X Ray ◽  
Ordered Phases ◽  
Ti Content ◽  
Temperature Phase Diagram

The phase transition from the paraelectric phase to ordered phases in Pb1-x(Li1/2La1/2)x(Zr1-yTiy)O3 with compositions close to the ferroelectric - antiferroelectric - paraelectric triple point in the Ti-content - temperature phase diagram is studied. X-ray diffraction is used to identify two - phase (antiferroelectric and ferroelectric) nuclei embeded in a paraelectric matrix. The relation between these two-phase nuclei in paraelectric phase and the diffuseness of the phase transition is discussed.

scholarly journals Pressure–Temperature Phase Diagram of Ta-H System up to 9 GPa and 600 °C

2021 ◽  
Vol 11 (15) ◽  
pp. 6719
Author(s):  
Hiroyuki Saitoh ◽  
Shigeyuki Takagi ◽  
Toyoto Sato ◽  
Shin-ichi Orimo
Keyword(s):  
Phase Diagram ◽  
High Pressure ◽  
Entropy Change ◽  
Temperature Phase ◽  
X Ray Diffraction ◽  
Hydrogenation Reactions ◽  
Pressure Synthesis ◽  
Temperature Phase Diagram ◽  
Clapeyron Slope

High-pressure hydrogenation behaviors of pure metals have not been investigated extensively, although intense research of hydrogenation reactions under high pressure has been conducted to find novel functional hydrides. The former provides us with valuable information for the high-pressure synthesis of novel functional hydrides. A pressure–temperature phase diagram of the Ta–H system has been determined using the in situ synchrotron radiation X-ray diffraction technique below 9 GPa and 600 °C in this study. At room temperature, the phase boundary obtained between distorted bcc TaH~1 and hcp TaH~2 was consistent with the previously reported transition pressure. The experimentally obtained Clapeyron slope can be explained via the entropy change caused by hydrogen evolution from TaH~2.

The pressure–temperature phase diagram of pure Co based on first-principles calculations

2017 ◽  
Vol 19 (33) ◽  
pp. 22061-22068 ◽  
Author(s):  
Cuiping Wang ◽  
Cong Li ◽  
Jiajia Han ◽  
Lihui Yan ◽  
Bin Deng ◽  
...  
Keyword(s):  
Phase Diagram ◽  
High Pressure ◽  
Thermodynamic Properties ◽  
First Principles ◽  
Liquidus Temperature ◽  
Temperature Phase ◽  
First Principles Calculations ◽  
Temperature Phase Diagram

We optimized the high pressure–temperature phase diagram of pure Co up to the liquidus temperature and 120 GPa, based on thermodynamic properties calculated using first-principles.

scholarly journals Low-temperature phase diagram of Fe1+yTe studied using x-ray diffraction

2013 ◽  
Vol 88 (9) ◽  
Author(s):  
Cevriye Koz ◽  
Sahana Rößler ◽  
Alexander A. Tsirlin ◽  
Steffen Wirth ◽  
Ulrich Schwarz
Keyword(s):  
Phase Diagram ◽  
Low Temperature ◽  
Temperature Phase ◽  
X Ray Diffraction ◽  
X Ray ◽  
Low Temperature Phase ◽  
Temperature Phase Diagram

High-temperature phase transitions in CsH2PO4 under ambient and high-pressure conditions: A synchrotron x-ray diffraction study

2007 ◽  
Vol 127 (19) ◽  
pp. 194701 ◽  
Author(s):  
Cristian E. Botez ◽  
Juan D. Hermosillo ◽  
Jianzhong Zhang ◽  
Jiang Qian ◽  
Yusheng Zhao ◽  
...  
Keyword(s):  
High Pressure ◽  
Phase Transitions ◽  
High Temperature ◽  
Diffraction Study ◽  
High Temperature Phase ◽  
Temperature Phase ◽  
X Ray Diffraction ◽  
X Ray

High pressure-temperature phase diagram and equation of state of titanium

2015 ◽  
Vol 91 (13) ◽  
Author(s):  
Agnès Dewaele ◽  
Vincent Stutzmann ◽  
Johann Bouchet ◽  
François Bottin ◽  
Florent Occelli ◽  
...  
Keyword(s):  
Phase Diagram ◽  
High Pressure ◽  
Equation Of State ◽  
Temperature Phase ◽  
Temperature Phase Diagram
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