[Back]

A. Grytsiv, J. Jun, P. Rogl, F. Weill, B. Chevalier, J. Etourneau, G. André, F. Bourée, H. Noel, P. Hundegger, G. Wiesinger:
"Crystal chemistry of the G-phases in the systems Ti?{Fe, Co, Ni}?Al with a novel filled variant of the Th_6.Mn₂₃-type";
Intermetallics, 11 (2003), 351 - 359.

Crystal chemistry of the G-phases in the systems Ti?{Fe, Co, Ni}?Al with a novel filled variant of the Th6Mn23-type

Andriy Grytsiva, Jin Jun Dinga, Peter Rogl [Corresponding Author Contact Information] , [E-mail The Corresponding Author] , a, François Weillb, Bernard Chevalierb, Jean Etourneaub, Gilles Andréc, Françoise Bouréec, Henri Noëld, Peter Hundeggere and Günter Wiesingere

a Institut für Physikalische Chemie, Universität Wien, A-1090 Wien, Währingerstr. 42, Austria
b Institut de Chimie de la Matiére Condensée de Bordeaux (ICMCB) CNRS-UPR 9048, Université de Bordeaux I, Ave. Dr. A. Schweitzer, 33608, Pessac, Cedex, France
c Laboratoire Léon Brillouin (CEA-CNRS), CEA/Saclay, F-91191, Gif-sur-Yvette, France
d Laboratoire de Chimie du Solide et Inorganique Moléculaire, Université de Rennes I, UMR CNRS-6511, Avenue du Général Leclerc, F-35042, Rennes cedex, France
e Institut für Festkörperphysik, TU Wien, A-1040 Wien, Wiedner Hauptstr. 8-10, Austria

Received 25 October 2002; accepted 12 December 2002. ; Available online 17 April 2003.


Abstract

The crystal structures of the compounds Ti6M7Al17 with M=Fe,Co,Ni have been investigated by X-ray powder and single crystal, neutron powder and electron diffraction. These compounds crystallize with a new filled variant of the Mg6Cu16Si7-type (space group [Image] ). A close structural relation is encountered for the series of crystal structures: Th6Mn16Mn7?, Mg6Cu16Si7?, Sc6Sc16Ir7Ir, Zr6Zn16Zn7Si, Ti6Al16M7Al, and Ti6Ni16Si7 Si. Electrical resistivity of the Fe, Co-based compounds is typical metallic and temperature dependence follows the Bloch Grüneisen relation with a Debye temperature of about 300 K. No hydrogen was found to be absorbed in the Fe-, and Co-based compounds at room temperature under a H2 pressure of 5 MPa.

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04405837

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TX8-48CVVGM-7&_user=103677&_handle=W-WA-A-A-AW-MsSAYVW-UUA-AUDZVBWDBE-WBBWYEDUD-AW-U&_fmt=summary&_co