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A ferrimagnetically coupled liquid crystal
Author(s) -
Griesar Klaus,
Athanassopoulou Maria A.,
Bustamante Eduardoa Soto,
Haase Wolfgang,
Tomkowicz Zbigniew,
Zaleski Andrzej J.
Publication year - 1997
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/adma.19970090109
Subject(s) - ferrimagnetism , tetracyanoethylene , materials science , mesogen , differential scanning calorimetry , homeotropic alignment , liquid crystal , porphyrin , crystallography , diffraction , analytical chemistry (journal) , liquid crystalline , magnetic field , optics , organic chemistry , magnetization , thermodynamics , chemistry , optoelectronics , physics , quantum mechanics
Ferrimagnetic coupling in a mesogen is reported for the first time for the compound Mn III [((OC 12 H 25 ) 4 TPP)](TCNE) · 2 touluene (where TPP = tetraphenyl porphyrin, TCNE – tetracyanoethylene), which displays liquid crystal properties above 381 K and ferrimagnetic properties below 21.4 K. The results from differential scanning calorimetry, X‐ray diffraction, and AC susceptibility studies are discussed. Evidence is presented for the presence of net magnetic moments at zero applied field.