scholarly journals Experimental Equipment for Studying the Residual Stresses Developed During High Temperature Reactions by X-Ray Diffraction

1996 ◽  
Vol 06 (C4) ◽  
pp. C4-259-C4-266
Author(s):  
F. Bernard ◽  
E. Sciora ◽  
N. Gerard
2018 ◽  
Vol 74 (5) ◽  
pp. 623-627 ◽  
Author(s):  
Sviatoslav Baranets ◽  
Hua He ◽  
Svilen Bobev

Three isostructural transition-metal arsenides and germanides, namely niobium nickel arsenide, Nb0.92(1)NiAs, niobium cobalt arsenide, NbCoAs, and niobium nickel germanide, NbNiGe, were obtained as inadvertent side products of high-temperature reactions in sealed niobium containers. In addition to reporting for the very first time the structures of the title compounds, refined from single-crystal X-ray diffraction data, this article also serves as a reminder that niobium containers may not be suitable for the synthesis of ternary arsenides and germanides by traditional high-temperature reactions. Synthetic work involving alkali or alkaline-earth metals, transition or early post-transition metals, and elements from groups 14 or 15 under such conditions may yield Nb-containing products, which at times could be the major products of such reactions.


1993 ◽  
Vol 03 (C9) ◽  
pp. C9-987-C9-997 ◽  
Author(s):  
Chun Liu ◽  
Anne-Marie Huntz ◽  
Jean-Lou Lebrun

2008 ◽  
Vol 23 (2) ◽  
pp. 173-173
Author(s):  
K. J. Martinschitz ◽  
Ch. Kirchlechner ◽  
R. Daniel ◽  
Ch. Mitterer ◽  
J. Keckes

2006 ◽  
Vol 987 ◽  
Author(s):  
Maddury Somayazulu ◽  
Steven Gramsch ◽  
Ho-Kwang Mao ◽  
Russell Hemley

AbstractWe present results of studies of the xenon-chlorine system to 60 GPa and temperature range 300 to 2000 K. Using a combination of Raman spectroscopy, infrared spectroscopy and synchrotron x-ray diffraction; we characterize the products of diamond cell experiments. In the 2-20 GPa pressure interval, we observe the formation of a deep red crystalline phase. Above 15 GPa, and at high temperature, a solid solution of Xe and Cl2 appears to form. Comparison of the ultraviolet-visible and infrared absorption measurements on the proposed alloy of Xe and Cl2 show that band edge moves into the visible range at high pressure


2010 ◽  
Vol 518 (8) ◽  
pp. 2090-2096 ◽  
Author(s):  
C. Kirchlechner ◽  
K.J. Martinschitz ◽  
R. Daniel ◽  
M. Klaus ◽  
C. Genzel ◽  
...  

2007 ◽  
Vol 78 (3) ◽  
pp. 036103 ◽  
Author(s):  
J. Keckes ◽  
E. Eiper ◽  
K. J. Martinschitz ◽  
H. Köstenbauer ◽  
R. Daniel ◽  
...  

1988 ◽  
Vol 36 (10) ◽  
pp. 2779-2786 ◽  
Author(s):  
A. Aubry ◽  
F. Armanet ◽  
G. Beranger ◽  
J.L. Lebrun ◽  
G. Maeder

1996 ◽  
Vol 51 (5) ◽  
pp. 677-680 ◽  
Author(s):  
Karsten Bluhm ◽  
André Wiesch

Single crystals of NiHo2(B2O5)2 were prepared by a B2O3 flux-technique in high temperature reactions at 1450 °C and investigated by X-ray diffraction. They crystallize in the space group C2h5-P21/c (Nr. 14) with a = 451.0(4); b = 724.8(3); c = 938.8(6) pm; β = 91,39( 1)°; Z = 2. The compound is isotypic to CuTb2 (B2O5)2 as well as to the gadolinite structure (FeY2(BeSiO5)2) and contains a two dimensional infinite anion with the formula 2∞ (B2O5)4-. The borate layers consist of four- and eight-membered rings of edge-sharing BO4 tetrahedra. The layers are connected via copper-centered elongated oxygen-octahedra and slightly distorted tetragonal HoO8 antiprisms.


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