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Ln 2 Al 3 Si 2 (Ln=Ho, Er, Tm): New Silicides from Molten Aluminum—Determination of the Al/Si Distribution with Neutron Crystallography and Metamagnetic Transitions
Author(s) -
Chen XianZhong,
Sieve Bradley,
Henning Robert,
Schultz Arthur J.,
Brazis Paul,
Kannewurf Carl R.,
Cowen Jerry A.,
Crosby Richard,
Kanatzidis Mercouri G.
Publication year - 1999
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/(sici)1521-3773(19990301)38:5<693::aid-anie693>3.0.co;2-x
Subject(s) - zigzag , lanthanide , crystallography , materials science , ternary operation , silicon , aluminium , neutron diffraction , metamagnetism , ion , chemistry , crystal structure , metallurgy , magnetic field , geometry , physics , mathematics , magnetization , organic chemistry , quantum mechanics , computer science , programming language
Highly metallic compounds with a quasi‐one‐dimensional structure, the new ternary compounds Ln 2 Al 3 Si 2 (Ln=Ho, Er, Tm) are synthesized in molten aluminum from lanthanoid and silicon as reagents. Their structures show a formally [Al 3 Si 2 ] 6− framework that contains infinite Al zigzag chains and Si−Si dimers and accommodates rows of Ln 3+ ions in parallel tunnels. The compounds exhibit metamagnetic transitions at high magnetic fields.