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Magnetic Field Induced Slow Magnetic Relaxation in KEr(MoO₄)₂

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Tkáč V., Orendáčová A., Tarasenko R., Pajerowski D., Čižmár E., Orendáč M., Anders A., Meisel M., Feher A.

Acta Physica Polonica A

2015

vol. 127

issue 2

353-355

The spin dynamics of a layered magnetic insulator, KEr(MoO₄)₂, have been investigated in a magnetic field applied along the easy axis at temperatures where the magnetism is dominated by the occupation of a ground doublet. More specifically, the DC magnetization and AC susceptibility were studied in magnetic fields up to 5 T and at temperatures ranging from 1.8 to 20 K. The temperature dependence of the AC susceptibility suggests a slowing down of magnetic relaxation with increasing magnetic field. The magnetic field dependence of the AC susceptibility, studied at nominally 2 K, indicates the presence of low-field, intermediate-field, and high-field regimes characterized by the interplay of internal and external magnetic fields that give rise to different relaxation processes.

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1 Acta Physica Polonica A

1 2015

1 Anders A.

1 Feher A.

1 Meisel M.

1 Orendáč M.

1 Orendáčová A.

1 Pajerowski D.

1 Tarasenko R.

1 Tkáč V.

1 Čižmár E.

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Magnetic Field Induced Slow Magnetic Relaxation in KEr(MoO₄)₂