| Full text | |
| Author(s): |
Khan, Atta U.
[1]
;
Nunes, Carlos A.
[2]
;
Coelho, Gilberto C.
[2, 3]
;
Suzuki, Paulo A.
[2]
;
Grytsiv, Andriy
[1]
;
Bourree, Francoise
[4]
;
Giester, Gerald
[5]
;
Rogl, Peter F.
[1]
Total Authors: 8
|
| Affiliation: | [1] Univ Vienna, Inst Phys Chem, A-1090 Vienna - Austria
[2] Univ Sao Paulo, Escola Engn Lorena, BR-12602810 Lorena, SP - Brazil
[3] Ctr Univ Volta Redonda, BR-27240560 Volta Redonda, RJ - Brazil
[4] CEA Saclay, Lab Leon Brillouin, F-91191 Gif Sur Yvette - France
[5] Univ Vienna, Inst Mineral & Crystallog, A-1090 Vienna - Austria
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | Journal of Solid State Chemistry; v. 190, p. 1-7, JUN 2012. |
| Web of Science Citations: | 4 |
| Abstract | |
X-ray single crystal (XSC) and neutron powder diffraction data (NPD) were used to elucidate boron site preference for five ternary phases. Ta3Si1-xBx (x=0.112(4)) crystallizes with the Ti3P-type (space group P4(2)/n) with B-atoms sharing the 8g site with Si atoms. Ta5Si3-x (x=0.03(1); Cr5B3- type) crystallizes with space group 14/mcm, exhibiting a small amount of vacancies on the 4 alpha site. Both, Ta-5(Si1-xBx)(3), X=0.568(3), and Nb-5(Si1-xBx)(3), x=0.59(2), are part of solid solutions of M5Si3 with Cr5B3-type into the ternary M-Si-B systems (M=Nb or Ta) with B replacing Si on the 8h site. The D8(8)-phase in the Nb-Si-B system crystallizes with the Ti5Ga4-type revealing the formula Nb5Si3B1-x (x=0.292(3)) with B partially filling the voids in the 2b site of the Mn5Si3 parent type. (C) 2012 Elsevier Inc. All rights reserved. (AU) | |