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A Genuine Two‐Dimensional Ising Ferromagnet with Magnetically Driven Re‐entrant Transition
Author(s) -
Kabbour Houria,
David Rénald,
Pautrat Alain,
Koo HyunJoo,
Whangbo MyungHwan,
André Gilles,
Mentré Olivier
Publication year - 2012
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/anie.201205843
Subject(s) - magnetism , condensed matter physics , ferromagnetism , ising model , instability , materials science , honeycomb , ion , physics , quantum mechanics , composite material
BaFe 2 (PO 4 ) 2 consists of honeycomb layers containing high‐spin d 6 Fe 2+ ions. It is the first genuine two‐dimensional oxide Ising ferromagnet (FM) with uniaxial magnetism parallel to the crystallographic three‐fold axis. BaFe 2 (PO 4 ) 2 undergoes a re‐entrant structural transition between 170 K and its FM critical temperature (65.5 K) owing to competition between the uniaxial magnetism and Jahn–Teller instability.