Thermochromism in copper(II) halide salts. 4. Bis(diethylammonium)tetrachlorocuprate(II), structure of the high-temperature phase and physical characterization of its two phases

1988 ◽  
Vol 110 (22) ◽  
pp. 7391-7398 ◽  
Author(s):  
Darrell R. Bloomquist ◽  
Mark R. Pressprich ◽  
Roger D. Willett
Keyword(s):  
High Temperature ◽  
High Temperature Phase ◽  
Physical Characterization ◽  
Temperature Phase ◽  
Two Phases ◽  
Halide Salts

Facile synthesis and characterization of high temperature phase FeS2 pyrite nanocrystals

2012 ◽  
Vol 75 ◽  
pp. 152-154 ◽  
Author(s):  
Su-Ching Hsiao ◽  
Chih-Ming Hsu ◽  
Szu-Ying Chen ◽  
Yu-Hsun Perng ◽  
Yu-Lun Chueh ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Phase ◽  
Synthesis And Characterization ◽  
Temperature Phase ◽  
Facile Synthesis ◽  
Fes2 Pyrite

High-temperature X-ray powder diffraction analysis of selected ceramic mixtures

1994 ◽  
Vol 9 (1) ◽  
pp. 38-43 ◽  
Author(s):  
Sampath S. Iyengar
Keyword(s):  
High Temperature ◽  
Powder Diffraction ◽  
Inert Atmosphere ◽  
High Temperature Phase ◽  
Pure Oxygen ◽  
Temperature Phase ◽  
X Ray ◽  
Two Phases ◽  
Phase Relationships

The utility of ultra-high-temperature (2100 °C) X-ray powder diffraction technique for investigating the high-temperature phase relationships of two pseudobinary mixtures, Al2O3/Y2O3 and AlN/SiO2, is described. The in situ analysis to 1600 °C was carried out using a platinum holder and a Pt/Rh thermocouple; whereas analysis beyond 1600 °C was performed with a tungsten holder, extremely pure, oxygen-free inert gas environment, and an opticalpyrometer to monitor temperatures up to 2100 °C. The solid-state interaction between Al2O3 and Y2O3 commenced with the formation of Al2Y4O9 (YAM), a yttria rich compound, at 1300 °C followed by AlYO3 (YAP) and Al5Y3O12 (YAG) at 1400 °C. Further heating to 1500 °C and above resulted in the increased concentration of YAG at the expense of the other two phases, followed by melting of the entire sample at 2050 °C. The only phase formed during cooling (from the molten state) was YAG. AlN and SiO2 did not react with each other, in an inert atmosphere, and they remained as separate, discrete phases even at 1600 °C. In the presence of oxygen, they reacted to form mullite and cristobalite, or SIALON depending on the partial pressure of oxygen.

scholarly journals Synthesis and Characterization of the Amidomanganates Rb2[Mn(NH2)4] and Cs2[Mn(NH2)4]

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 676
Author(s):  
Christian Bäucker ◽  
Soeren Bauch ◽  
Rainer Niewa
Keyword(s):  
High Temperature ◽  
Single Phase ◽  
Inert Atmosphere ◽  
High Temperature Phase ◽  
Synthesis And Characterization ◽  
Temperature Phase ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ir Spectroscopic

We report the successful synthesis of Rb2[Mn(NH2)4] and Cs2[Mn(NH2)4] from ammonothermal conditions at 723 K and pressures above 850 bar. Both compounds were obtained single phase according to powder X-ray diffraction. The crystal structures were determined by single crystal X-ray diffraction. For Rb2[Mn(NH2)4] we have obtained the high-temperature phase. The structures are analyzed with respect to the earlier reported alkali metal amidomanganates. Upon heating in inert atmosphere Cs2[Mn(NH2)4] decomposes to manganese nitrides. IR spectroscopic results are reported.

Re-investigation of the Cd-Ce Phase Diagram and Structural Characterization of the High-Temperature Phase Cd17+2x Ce2−x (x ~ 0.02)

2016 ◽  
Vol 37 (2) ◽  
pp. 186-200
Author(s):  
Barbara Skołyszewska-Kühberger ◽  
Thomas L. Reichmann ◽  
Martin C. J. Marker ◽  
Herta S. Effenberger ◽  
Herbert Ipser
Keyword(s):  
Phase Diagram ◽  
High Temperature ◽  
Structural Characterization ◽  
High Temperature Phase ◽  
Temperature Phase
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