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Fe‐Diluted Magnetic Alloys REIn 3− x Fe x (RE = Pr, Nd, Gd, Ho)
Author(s) -
Yang Shuowang,
Guo Yongquan,
Wang Cong
Publication year - 2020
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201900141
Subject(s) - ferromagnetism , magnetic moment , materials science , paramagnetism , doping , phase (matter) , crystallography , condensed matter physics , chemistry , physics , optoelectronics , organic chemistry
The phase evolution and magnetic properties of Fe doping into REIn 3 (RE = Pr, Nd, Gd, Ho) are systematically studied using X‐ray diffraction, scanning electron microscopy with energy dispersive spectrum, and magnetic measurements. Fe doping into REIn 3 induces the magnetic phase transition from paramagnetic to ferromagnetic associated with minor In separation from the cubic phase with AuCu 3 ‐type structure at room temperature. The structural stability of cubic phase is related to size effect R A and electro‐negativity difference Δ X . Cubic REIn 3– x Fe x could be stabilized in the range of 1.0602–1.0963 Å for R A and 0.380–0.420 for Δ X . Ferromagnetism of REIn 3– x Fe x might be explained as the 3d–3d interactions between Fe atoms and 3d–s–4f indirect interactions between Fe and rare earth atoms mediated by the conducting s electrons. The increase of magnetic moment for REIn 3– x Fe x could result from the partial substitution of nonmagnetic element In by magnetic element Fe in the host material through dilute doping of Fe, and thus a net moment is produced.