Effect of high pressure on the crystal structure and electronic properties of magnetite below 25 GPa

2012 ◽  
Vol 97 (1) ◽  
pp. 128-133 ◽  
Author(s):  
K. Glazyrin ◽  
C. McCammon ◽  
L. Dubrovinsky ◽  
M. Merlini ◽  
K. Schollenbruch ◽  
...  
2010 ◽  
Vol 82 (2) ◽  
Author(s):  
S. Ghedia ◽  
T. Locherer ◽  
R. Dinnebier ◽  
D. L. V. K. Prasad ◽  
U. Wedig ◽  
...  

ChemInform ◽  
2016 ◽  
Vol 47 (17) ◽  
Author(s):  
Alexei A. Belik ◽  
Wei Yi ◽  
Yu Kumagai ◽  
Yoshio Katsuya ◽  
Masahiko Tanaka ◽  
...  

2014 ◽  
Vol 53 (21) ◽  
pp. 11616-11625 ◽  
Author(s):  
Yuichi Shirako ◽  
Xia Wang ◽  
Yoshihiro Tsujimoto ◽  
Kie Tanaka ◽  
Yanfeng Guo ◽  
...  

2016 ◽  
Vol 55 (4) ◽  
pp. 1940-1945 ◽  
Author(s):  
Alexei A. Belik ◽  
Wei Yi ◽  
Yu Kumagai ◽  
Yoshio Katsuya ◽  
Masahiko Tanaka ◽  
...  

2020 ◽  
Author(s):  
Keishiro Yamashita ◽  
Kazuki Komatsu ◽  
Hiroyuki Kagi

An crystal-growth technique for single crystal x-ray structure analysis of high-pressure forms of hydrogen-bonded crystals is proposed. We used alcohol mixture (methanol: ethanol = 4:1 in volumetric ratio), which is a widely used pressure transmitting medium, inhibiting the nucleation and growth of unwanted crystals. In this paper, two kinds of single crystals which have not been obtained using a conventional experimental technique were obtained using this technique: ice VI at 1.99 GPa and MgCl<sub>2</sub>·7H<sub>2</sub>O at 2.50 GPa at room temperature. Here we first report the crystal structure of MgCl2·7H2O. This technique simultaneously meets the requirement of hydrostaticity for high-pressure experiments and has feasibility for further in-situ measurements.


2019 ◽  
Vol 74 (4) ◽  
pp. 357-363
Author(s):  
Daniela Vitzthum ◽  
Hubert Huppertz

AbstractThe mixed cation triel borate Ga4In4B15O33(OH)3 was synthesized in a Walker-type multianvil apparatus at high-pressure/high-temperature conditions of 12.5 GPa and 1300°C. Although the product could not be reproduced in further experiments, its crystal structure could be reliably determined via single-crystal X-ray diffraction data. Ga4In4B15O33(OH)3 crystallizes in the tetragonal space group I41/a (origin choice 2) with the lattice parameters a = 11.382(2), c = 15.244(2) Å, and V = 1974.9(4) Å3. The structure of the quaternary triel borate consists of a complex network of BO4 tetrahedra, edge-sharing InO6 octahedra in dinuclear units, and very dense edge-sharing GaO6 octahedra in tetranuclear units.


RSC Advances ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 3577-3581 ◽  
Author(s):  
Nursultan Sagatov ◽  
Pavel N. Gavryushkin ◽  
Talgat M. Inerbaev ◽  
Konstantin D. Litasov

We carried out ab initio calculations on the crystal structure prediction and determination of P–T diagrams within the quasi-harmonic approximation for Fe7N3 and Fe7C3.


Author(s):  
Daniela Vitzthum ◽  
Ingo Widmann ◽  
Daniel S. Wimmer ◽  
Klaus Wurst ◽  
Bastian Joachim-Mrosko ◽  
...  

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