Fifty–Fifty Zr–Ti Solid Solution with a TiO2-Type Structure: Electronic Structure and Photochemical Properties of Zirconium Titanate ZrTiO4

2017 ◽  
Vol 121 (10) ◽  
pp. 5487-5497 ◽  
Author(s):  
Valeria Polliotto ◽  
Elisa Albanese ◽  
Stefano Livraghi ◽  
Paulina Indyka ◽  
Zbigniew Sojka ◽  
...  
2010 ◽  
Vol 107 (9) ◽  
pp. 093702 ◽  
Author(s):  
D. H. O’Neil ◽  
R. G. Egdell ◽  
P. P. Edwards

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Myroslava Horiacha ◽  
Galyna Nychyporuk ◽  
Rainer Pöttgen ◽  
Vasyl Zaremba

Abstract Phase formation in the solid solution TbNiIn1−x Ga x at 873 K was investigated in the full concentration range by means of powder X-ray diffraction and EDX analysis. The samples were synthesized by arc-melting of the pure metals with subsequent annealing at 873 K for one month. The influence of the substitution of indium by gallium on the type of structure and solubility was studied. The solubility ranges have been determined and changes of the unit cell parameters were calculated on the basis of powder X-ray diffraction data: TbNiIn1–0.4Ga0–0.6 (ZrNiAl-type structure, space group P 6 ‾ 2 m $P‾{6}2m$ , a = 0.74461(8)–0.72711(17) and c = 0.37976(5)–0.37469(8) nm); TbNiIn0.2–0Ga0.8–1.0 (TiNiSi-type structure, space group Pnma, а = 0.68950(11)–0.68830(12), b = 0.43053(9)–0.42974(6), с = 0.74186(10)–0.73486(13) nm). The crystal structures of TbNiGa (TiNiSi type, Pnma, a = 0.69140(5), b = 0.43047(7), c = 0.73553(8) nm, wR2=0.0414, 525 F 2 values, 21 variables), TbNiIn0.83(1)Ga0.17(1) (ZrNiAl type, P 6 ‾ 2 m $P‾{6}2m$ , a = 0.74043(6), c = 0.37789(3) nm, wR2 = 0.0293, 322 F 2 values, 16 variables) and TbNiIn0.12(2)Ga0.88(2) (TiNiSi type, Pnma, a = 0.69124(6), b = 0.43134(9), c = 0.74232(11) nm, wR2 = 0.0495, 516 F 2 values, 21 variables) have been determined. The characteristics of the solid solutions and the variations of the unit cell parameters are briefly discussed.


2011 ◽  
Vol 52 (6) ◽  
pp. 1324-1326 ◽  
Author(s):  
Yasumasa Chino ◽  
Takamichi Ueda ◽  
Motohisa Kado ◽  
Mamoru Mabuchi

1992 ◽  
Vol 7 (8) ◽  
pp. 2219-2224 ◽  
Author(s):  
N.E. Pingitore ◽  
B.F. Ponce ◽  
M.P. Eastman ◽  
F. Moreno ◽  
C. Podpora

Optical, electron microprobe, and x-ray diffraction analysis of 88 samples of various compositions between Ag2S and Ag2Se synthesized at high temperature in sealed quartz tubing indicates the presence of two solid-solution series in this system at ambient (room) conditions. One series extends from Ag2S to approximately Ag2S0.4Se0.7 and has the Ag2S-III-type structure (monoclinic). The second series ranges from Ag2S0.3Se0.7 to Ag2Se and is characterized by the Ag2Se-II-type structure (orthorhombic). Members of both series, in appropriate proportions, characterize the apparent compositional gap between the two solid solutions. Gradual shifts in the locations of the x-ray diffraction peaks along the compositional gradient of each solid solution revealed an expansion of the d-spacing as the larger Se ion was substituted for S in the Ag2S-III-type structure and a contraction as S was substituted for Se in the Ag2Se-II-type structure. The reported discrete phase, Ag4SSe (aguilarite, orthorhombic), appears to be simply a member of the monoclinic Ag2S-III-type solid solution.


1984 ◽  
Vol 167 (3-4) ◽  
pp. 235-246 ◽  
Author(s):  
Torsten Lundström ◽  
Lars-Erik Tergenius ◽  
Iwami Higashi

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Loku Singgappulige Rosantha Kumara ◽  
Osami Sakata ◽  
Hirokazu Kobayashi ◽  
Chulho Song ◽  
Shinji Kohara ◽  
...  

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