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New Layered Iron‐Lanthanum‐Oxide‐Sulfide and ‐Selenide Phases: Fe 2 La 2 O 3 E 2 (E = S,Se)
Author(s) -
Mayer James M.,
Schneemeyer Lynn F.,
Siegrist Theo,
Waszczak Joseph V.,
Van Dover Bruce
Publication year - 1992
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199216451
Subject(s) - lanthanum , selenide , crystallography , materials science , oxide , semiconductor , condensed matter physics , physics , inorganic chemistry , chemistry , selenium , metallurgy , optoelectronics
A two‐dimensional network of face‐sharing FeO 2 E 4 octahedrons (E = S, Se) interspersed with double layers of square E 4 O 4 antiprisms, in whose centers lanthanum atoms are situated, is one description of the layers in the unusual structure of the Fe 2 La 2 O 3 E 2 phases (see structure for E = Se on the right). Both the oxidesulfide and the oxideselenide are semiconductors with interesting magnetic properties.