ACTA

Superparamagnetic-Like Behaviour in RE₂WO₆ Tungstates (Where RE = Nd, Sm, Eu, Gd, Dy, Ho and Er)

T. Groń^a, E. Tomaszewicz^b, P. Urbanowicz^a, H. Duda^a and T. Mydlarz^c
^aInstitute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland
^bDepartment of Inorganic and Analytical Chemistry, West Pomeranian University of Technology, al. Piastów 42, 71-065 Szczecin, Poland
^cInternational Laboratory of High Magnetic Fields and Low Temperatures, Gajowicka 95, 53-529 Wrocław, Poland

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The magnetization isotherms were used to study the superparamagnetic-like behaviour in polycrystalline (powder) RE₂WO₆ tungstates (where RE = Nd, Sm, Eu, Gd, Dy, Ho and Er). The magnetization isotherms of the majority tungstates under study revealed both the spontaneous magnetic moments and hysteresis characteristic for the superparamagnetic-like behaviour with blocking temperature T_B ≈ 30 K except the Sm₂WO₆ and Eu₂WO₆ compounds.

DOI: 10.12693/APhysPolA.119.708
PACS numbers: 75.20.-g, 75.25.Dk, 75.30.Cr, 73.61.Ng