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Structural‐Distortion‐Driven Cooperative Magnetic and Semiconductor‐to‐Insulator Transitions in Ferromagnetic FeSb 2 Se 4
Author(s) -
Djieutedjeu Honore,
Poudeu Pierre F. P.,
Takas Nathan J.,
Makongo Julien P. A.,
Rotaru Aurelian,
Ranmohotti Kulugammana G. S.,
Anglin Clarence J.,
Spinu Leonard,
Wiley John B.
Publication year - 2010
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.201005458
Subject(s) - condensed matter physics , ferromagnetism , semiconductor , phase transition , lattice (music) , electrical resistivity and conductivity , insulator (electricity) , magnetization , materials science , physics , magnetic field , optoelectronics , quantum mechanics , acoustics
Chop and change : The FeSb 2 Se 4 phase (see picture; Se red, Fe,Sb green and blue) features the coexistence of room‐temperature ferromagnetism and cooperative magnetic and semiconductor‐to‐insulator transitions at about 130 K. The transitions, which manifest themselves by a spontaneous loss of magnetization and a sudden increase in electrical resistivity, are driven by preferential lattice contraction within the ab plane upon cooling.