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Increasing the Coercivity in Layered Molecular‐based Magnets A[M II M III (ox) 3 ] (M II = Mn, Fe, Co, Ni, Cu; M III = Cr, Fe; ox = oxalate; A = organic or organometallic cation)
Author(s) -
Coronado Eugenio,
GalánMascarós José R.,
GómezGarcía Carlos J.,
MartínezAgudo José M.
Publication year - 1999
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/(sici)1521-4095(199905)11:7<558::aid-adma558>3.0.co;2-2
Subject(s) - materials science , oxalate , coercivity , molecular magnets , magnet , inorganic chemistry , crystallography , condensed matter physics , magnetization , chemistry , magnetic field , physics , quantum mechanics
A spectacular increase in the coercive field with values as high as 1.7 Tesla has been observed in the family of layered molecular magnets A[M II M III (ox) 3 ] for the Fe III /Cr III mixed metal alloys, where M II = Mn, Fe, Co, Ni, Cu; M III = Cr, Fe; ox = oxalate; and A = organic or organometallic cation. In these novel molecular magnets, the transition temperature can be easily tuned by simply varying x , the Fe III /Cr III ratio. x was also found to affect the thermal dependence of the magnetic hysteresis for this series, particularly interesting behavior being observed in the iron ( II ) compounds having x close to 1.