According to the results of electron diffraction reported in the literature this carbon allotrope has a space group Fm \(\bar{3}\) m (group number 225) with a lattice parameter of about 3.54–3.57 Å. Nevertheless, because of the closeness of its lattice parameter to that of diamond...
The two mono-pnictides compounds of thorium, i.e., ThSb and ThBi are modeled in the space group Fm 3m (225) with fcc crystal symmetry (Fig. 1). Atomic-positions configuration of the species in the compounds are similar to NaCl-type structure as follows: Th (0,0,0) and Sb/Bi (...
The composition was determined as Hg[sub 2]Re[sub 0.5]Ba[sub 4]Ca[sub 1.5]O[sub 8.5] and an univocal interpretation was found in terms of the high-symmetry space group Fm3m(225), with Z=2, (=6.70 g/cm鲁; the reliability factor was 5.0%. This phase, Cu-free and not ...
www.nature.com/scientificreports OPEN received: 13 May 2016 accepted: 23 June 2016 Published: 25 July 2016 Controllable Phase Transformation and Mid-infrared Emission from Er3+-Doped Hexagonal-/Cubic- NaYF4 Nanocrystals Dandan Yang1, Dongdan Chen1, Huilin He1, Qiwen Pan1, Quanlan ...
-1 .0 GO TO 3 9 ALL W E I G H T S = l r 4 4 1 LOOK AT EACH P O I N T AND WEIGHT THEM I F YOU WANT T O A 215 A 216 A 217 A 218 A 219 A 220 A 221 A 222 A 223 A 224 A 225 A 226 A 227 A 228 A 229 3 6 CALL PLPT (X.YY.NOI XRAY ( 2 J = X ...
(f) ±(x, 0, 1/2) of Pm3 jubilite into three 8-connected cube centered vertices (the fourth 8-connected cube centered vertex located at (0, 0, 0) is retained undeformed from the parent jubilite lattice) in Wyckoff positions 4(a) (0, 0, 0) of Fm3m, number 225, fluorite [12]...
The optimal lattice parameters were determined using PBE-GGA functional and the Birch Murnaghan equation of state [25] against volume (a.u) in the three phases of non-magnetic (NM), ferromagnetic (FM), and antiferromagnetic phase (AFM), as shown in Figure 2. The computed results of the ...