Crystal structure ofHgBa2Ca2Cu3O8+δat high pressure (to 8.5 GPa) determined by powder neutron diffraction

1995 ◽  
Vol 52 (21) ◽  
pp. 15551-15557 ◽  
Author(s):  
A. R. Armstrong ◽  
W. I. F. David ◽  
I. Gameson ◽  
P. P. Edwards ◽  
J. J. Capponi ◽  
...  
2007 ◽  
Vol 40 (6) ◽  
pp. 1039-1043 ◽  
Author(s):  
Darrick J. Williams ◽  
L. L. Daemen ◽  
S. C. Vogel ◽  
Th. Proffen

A structural study of α-AgSCN was carried out using the neutron powder diffractometer HIPPO (high-pressure preferred orientation powder) at ten different temperatures between 25 and 275 K. The structure of α-AgSCN was refined using the Rietveld method and the symmetry elements for the material were found to be: space group No. 15,C2/c,a= 8.7210 (8) Å,b= 7.9318 (8) Å,c= 12.3329 (5) Å, β = 138.750 (3)°, volume = 562.497 (9) Å3andZ= 8. The Ag+cation has tetrahedral coordination and is surrounded by three –SCN thiocyanate ligands and one isothiocyanate –NCS ligand down to 25 K, with no structural changes. The bond lengths at 275 K are Ag—S1 = 2.749 (10), Ag—S2 = 2.995 (11), Ag—S3 = 2.411 (11), Ag—N = 2.150 (5), S—C = 1.783 (11) and C—N = 1.1447 (35) Å. The bond lengths at 25 K are Ag—S1 = 2.782 (5), Ag—S2 = 2.941 (5), Ag—S3 = 2.431 (5), Ag—N = 2.1526 (26), S—C = 1.749 (5) and C—N = 1.140 (2) Å.


Nature ◽  
1986 ◽  
Vol 320 (6057) ◽  
pp. 46-48 ◽  
Author(s):  
A. K. Cheetham ◽  
W. I. F. David ◽  
M. M. Eddy ◽  
R. J. B. Jakeman ◽  
M. W. Johnson ◽  
...  

2019 ◽  
Vol 33 (15) ◽  
pp. 1950149 ◽  
Author(s):  
N. T. Mamedov ◽  
S. H. Jabarov ◽  
D. P. Kozlenko ◽  
N. A. Ismayilova ◽  
M. Yu. Seyidov ◽  
...  

We have investigated the crystal structure of strongly anisotropic semiconductor TlInSe2 by neutron diffraction method under high pressure upto P = 3.3 GPa. It was shown that the tetragonal phase of TlInSe2 crystal (the space group I4/mcm) is stable in the whole investigated range of pressure. The lattice parameters dependence of the pressure and the unit cell volume are obtained, the linear coefficients of compressibility and the bulk moduli are calculated. At the low pressure, obtained value of compressibility for the lattice parameter a is k[Formula: see text] = 14.23 × 10[Formula: see text] GPa[Formula: see text] and for c is k[Formula: see text] = 5.93 × 10[Formula: see text] GPa[Formula: see text]. Obtained values for bulk modulus B0 and its pressure derivative B[Formula: see text] in tetragonal phase are 30(7) GPa and 4(1), respectively.


1991 ◽  
Vol 24 (2) ◽  
pp. 142-145 ◽  
Author(s):  
V. A. Trunov ◽  
A. L. Malyshev ◽  
D. Yu. Chernyshov ◽  
A. I. Kurbakov ◽  
M. M. Korsukova ◽  
...  

1997 ◽  
Vol 132 (2) ◽  
pp. 267-273 ◽  
Author(s):  
Kurt Leinenweber ◽  
Dan E. Partin ◽  
Udo Schuelke ◽  
Michael O'Keeffe ◽  
Robert B. Von Dreele

2014 ◽  
Vol 262 ◽  
pp. 622-624
Author(s):  
Yoshihisa Ishikawa ◽  
Takashi Sakuma ◽  
Haruyuki Takahashi ◽  
Sergey A. Danilkin

2008 ◽  
Vol 18 (2) ◽  
pp. 170-172 ◽  
Author(s):  
Kazuki KOMATSU ◽  
Hiroshi ARIMA ◽  
Hiroyuki KAGI ◽  
Takuo OKUCHI ◽  
Shigeo SASAKI ◽  
...  

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