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Magnetism in RCo_{2} (R = Dy, Ho, Er, Tm) Under Hydrostatic Pressure

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Prchal J., Šebesta J., Valenta J., Míšek M., Turčinková D., Lapčák L., Prokleška J., Kratochvílová M., Sechovský V.

Acta Physica Polonica A

2014

vol. 126

issue 1

288-289

The short-range parimagnetic configurations, observed in the heavy rare-earth RCo_{2} compounds in paramagnetic range far above the Curie temperature T_{C}, consist in formation of ferromagnetic cobalt clusters antiferromagnetically coupled to the neighboring R magnetic moments. The characteristic temperature of the onset of parimagnetism T_{f} is very sensitive to changes of external conditions like pressure or composition. The pressure coefficients ∂T_{f}/∂p and ∂T_{C}/∂p are comparable, indicating a close connection of underlying mechanisms. Our recent measurements indicate systematic evolution of the pressure coefficients with spanning the rare-earth series from Dy through Tm in RCo_{2} with a specific case TmCo_{2}.

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1 Acta Physica Polonica A

1 2014

1 Kratochvílová M.

1 Lapčák L.

1 Míšek M.

1 Prchal J.

1 Prokleška J.

1 Sechovský V.

1 Turčinková D.

1 Valenta J.

1 Šebesta J.

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Magnetism in RCo_{2} (R = Dy, Ho, Er, Tm) Under Hydrostatic Pressure