Magnetic properties of low-dimensional Ising magnet KEr(MoO4)2
E. N. KhatskoB. I. Verkin Physicotechnical Institute of Low Temperatures, Ukrainian Academy of Sciences, 310164 KharkovA. S. ChernyĭB. I. Verkin Physicotechnical Institute of Low Temperatures, Ukrainian Academy of Sciences, 310164 KharkovA. I. KaplienkoB. I. Verkin Physicotechnical Institute of Low Temperatures, Ukrainian Academy of Sciences, 310164 Kharkov
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The magnetic properties of the low-dimensional Ising magnet KEr(MoO4)2 are studied in the temperature interval 0.5–20 K. Measurements of temperature dependences of the principal values of magnetic susceptibility point towards a magnetic phase transition to antiferromagnetic state at Tc=0.9 K. A noncollinear four-sublattice magnetic structure is realized, the magnetic moments lie in the bc-plane and are turned relative to the b-axis through an angle of 18°. The results are described by the model of weakly interacting ferromagnetic chains. Spin-orientation transitions with a mixed state have been detected in the ordered state. Relaxation processes are investigated.
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