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Superparamagnetism in CuFeInTe 3 and CuFeGaTe 3 alloys
Author(s) -
GrimaGallardo P.,
Alvarado F.,
Muñoz M.,
Durán S.,
Quintero M.,
Nieves L.,
Quintero E.,
Tovar R.,
Morocoima M.,
Ramos M. A.
Publication year - 2012
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201127663
Subject(s) - superparamagnetism , ferrimagnetism , ferromagnetism , condensed matter physics , squid , materials science , atmospheric temperature range , cluster (spacecraft) , range (aeronautics) , analytical chemistry (journal) , nuclear magnetic resonance , magnetic field , thermodynamics , magnetization , chemistry , physics , chromatography , composite material , ecology , quantum mechanics , computer science , biology , programming language
The temperature dependencies of DC magnetic susceptibilities, χ ( T ), of CuFeInTe 3 and CuFeGaTe 3 alloys were measured in a SQUID apparatus using the protocol of field cooling (FC) and zero FC (ZFC). The FC curves of both samples reflect a weak ferromagnetic (or ferrimagnetic) behavior with a nearly constant value of χ ( T ) in the measured temperature range (2–300 K) indicating that the critical temperatures ( T c ) are >300 K. The ZFC curves diverges from FC, showing irreversibility temperatures ( T irr ) of ∼250 K for CuFeInTe 3 and >300 K for CuFeGaTe 3 , suggesting that we are dealing with cluster‐glass systems in a superparamagnetic state.