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Sequence of Ferrimagnetic Phases in Er 2 O 2 SO 4
Author(s) -
Kasten A.,
Hoffmann J.
Publication year - 1984
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.2221230220
Subject(s) - ferrimagnetism , antiferromagnetism , phase diagram , saturation (graph theory) , ising model , condensed matter physics , magnetization , paramagnetism , materials science , crystallography , phase (matter) , physics , magnetic field , chemistry , mathematics , combinatorics , quantum mechanics
Below T N = 1.5 K Er 2 O 2 SO 4 is an Ising antiferromagnet. In contrast to other RE 2 O 2 SO 4 (RE = = Dy, Ho, Tb, Gd) the ordering is along the crystallographic c ‐axis. In external magnetic fields applied along c the antiferromagnetic phase is left via intermediate ferrimagnetic structures with multiples of 1/8 of the saturation magnetisation and enters finally the paramagnetic saturated state. The main features of the experimental phase diagram are reproduced by mean field calculations.