Crystal Chemistry of Stable and Metastable (Rapidly Quenched) B-Metal Alloy Phases

1968 ◽  
Vol 12 ◽  
pp. 23-49 ◽  
Author(s):  
Bill C. Giessen
Keyword(s):  
High Pressure ◽  
Crystal Structures ◽  
Solid Solutions ◽  
Periodic Table ◽  
Rapid Quenching ◽  
Pseudopotential Theory ◽  
Phase Fields ◽  
Disordered Crystal ◽  
Equilibrium Phases ◽  
Qualitative Discussion

AbstractThe crystal structures of elements and alloy phases in the B-metal region (B2(Zn) to B5(As) groups) have been classified into phase fields determined by their position in the periodic table. The limited number of equilibrium phases with element-like, disordered crystal structures and of extended terminal solid solutions has been more than doubled by the addition of metastable phases produced by ultra-rapid quenching from the melt (splat cooling). Strong structural correlations exist. Some high pressure phases have been included; in some cases, a qualitative discussion from the viewpoint of pseudopotential theory is given.

scholarly journals Crystal Structures and Electronic States of High-Pressure-Synthesized (1-x)PbVO3-xBiCrO3 Solid Solutions

2021 ◽  
pp. 1-7
Author(s):  
Hajime Yamamoto ◽  
Haruna Aizawa ◽  
Ikuya Yamada ◽  
Kaoru Toda ◽  
Atsushi Tanaka ◽  
...  
Keyword(s):  
High Pressure ◽  
Crystal Structures ◽  
Solid Solutions ◽  
Electronic States

The distribution of minerals in hyper-agpaitic rocks in terms of symmetry: evolution of views on the number and symmetry of minerals

2001 ◽  
pp. 73-82 ◽  
Author(s):  
Alexander P. Khomyakov
Keyword(s):  
Crystal Structures ◽  
21St Century ◽  
Special Interest ◽  
Periodic Table ◽  
Mineral Species ◽  
Original Series ◽  
Temperature Range ◽  
The Earth ◽  
High Alkalinity ◽  
Low Symmetry

NOTE: This article was published in a former series of GEUS Bulletin. Please use the original series name when citing this article, for example: Khomyakov, A. P. (2001). The distribution of minerals in hyper-agpaitic rocks in terms of symmetry: evolution of views on the number and symmetry of minerals. Geology of Greenland Survey Bulletin, 190, 73-82. https://doi.org/10.34194/ggub.v190.5176 _______________ Among the unique mineral localities of the Earth the complexes of nepheline syenites with hyper-agpaitic differentiates are of special interest due to their extreme diversity of mineral species. The four best studied complexes of this type – Khibina, Lovozero, Ilímaussaq and Mont Saint-Hilaire – have yielded more than 700 mineral species of which about 200 are new. The great mineral diversity is due to the combination of several factors, the most important of which is the extremely high alkalinity of agpaitic magmas, causing about half of the elements of the periodic table to be concentrated together. Minerals from hyper-agpaitic rocks are characterised by the predominance of highly ordered, low-symmetry crystal structures resulting, in particular, from the markedly extended temperature range of crystallisation. Generalisation of available data for unique mineral localities underpins the hypothesis that there is no natural limit to the number of mineral species. It is predicted that by the middle of the 21st century, the overall number of minerals recorded in nature will exceed 10 000, with the proportion of triclinic species increasing from the present 9% to 14.5%, and that of cubic species decreasing from 10% to 5%.

Low Temperature (4K) and High Pressure (6.5 Kbars) Crystal Structures of (TMTSF)2PF6

1985 ◽  
Vol 119 (1) ◽  
pp. 225-232 ◽  
Author(s):  
Bernard Galiois ◽  
Jacques Gaultier ◽  
Christian Hauw ◽  
Daniel Chasseau ◽  
Alain Meresse ◽  
...  
Keyword(s):  
High Pressure ◽  
Low Temperature ◽  
Crystal Structures

scholarly journals Accelerated materials design approaches based on structural classification: application to low enthalpy high pressure phases of SH3 and SeH3

2017 ◽  
Vol 3 (1) ◽  
Author(s):  
José A. Flores-Livas ◽  
Antonio Sanna ◽  
Stefan Goedecker
Keyword(s):  
High Pressure ◽  
Crystal Structures ◽  
Energy Landscape ◽  
Materials Design ◽  
Structural Classification

AbstractWe propose a methodology that efficiently asseses major characteristics in the energy landscape for a given space of configurations (crystal structures) under pressure. In this work we study SH

ChemInform Abstract: Nanometric Solid Solutions of the Fluorite and Perovskite Type Crystal Structures: Synthesis and Properties

ChemInform ◽  
2013 ◽  
Vol 44 (28) ◽  
pp. no-no
Author(s):  
Snezana Boskovic ◽  
Slavica Zec ◽  
Branko Matovic ◽  
Zorana Dohcevic-Mitrovic ◽  
Zoran Popovic ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Solid Solutions ◽  
Perovskite Type ◽  
Type Crystal

ChemInform Abstract: High-Pressure Synthesis, Crystal Structures, and Magnetic Properties of 5d Double-Perovskite Oxides Ca2MgOsO6and Sr2MgOsO6.

ChemInform ◽  
2015 ◽  
Vol 46 (24) ◽  
pp. no-no
Author(s):  
Yahua Yuan ◽  
Hai L. Feng ◽  
Madhav Prasad Ghimire ◽  
Yoshitaka Matsushita ◽  
Yoshihiro Tsujimoto ◽  
...  
Keyword(s):  
High Pressure ◽  
Magnetic Properties ◽  
Crystal Structures ◽  
Double Perovskite ◽  
Perovskite Oxides ◽  
High Pressure Synthesis ◽  
Pressure Synthesis
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