Magnetic Properties of La₃Ga_{5.5}Ta_{0.5}O₁₄ Single Crystals Doped with Sm³⁺ and Er³⁺ Ions

• Authors: S. Kaczmarek , G. Leniec , M. Berkowski , S. Kazan , M. Acikgoz
• Languages of publication: EN

Abstracts

EN

Electron paramagnetic resonance and magnetic susceptibility measurements were performed for two La₃Ga_{5.5}Ta_{0.5}O₁₄ single crystals doped with 1.96 at.% of Sm³⁺ ions and 3.8 at.% of Er³⁺ ions. Two magnetically inequivalent sites were found to be responsible for the electron paramagnetic resonance spectra of Sm³⁺ ions. Both sites reveal a low (at least C₂) symmetry with g_{x}~0.46, g_{y}~0.46 and g_{z}~0.52. The symmetry of isolated erbium ions is higher than C₂. From electron paramagnetic resonance and magnetic susceptibility experiments it results that the ground state of Er³⁺ ions is Γ⁶ or Γ⁷. Below 51 K electronic transitions within Γ⁶ doublets take place. Between 51 and 60 K, Γ⁶ to Γ⁷ transitions dominate, while above 60 K mainly transitions within Γ⁷ doublet are active.

Keywords

EN

75.10.Dg; 76.30.Kg; 75.30.Gw; 75.40.Cx

Discipline

• 75.30.Gw: Magnetic anisotropy
• 75.40.Cx: Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.)
• 75.10.Dg: Crystal-field theory and spin Hamiltonians(see also 71.70.Ch Crystal and ligand fields)
• 76.30.Kg: Rare-earth ions and impurities

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 131
• Issue: 3
• Pages: 366-369

Dates

published

2017-03

Contributors

author

S. Kaczmarek

• Institute of Physics, Faculty of Mechanical Engineering and Mechatronics, Westpomeranian University of Technology, 17 Al. Piastow Str., 70-310 Szczecin

author

G. Leniec

• Institute of Physics, Faculty of Mechanical Engineering and Mechatronics, Westpomeranian University of Technology, 17 Al. Piastow Str., 70-310 Szczecin

author

M. Berkowski

• Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46 PL-02668 Warsaw, Poland

author

S. Kazan

• Gebze Technical University, Department of Physics, TR-41400 Gebze, Turkey

author

M. Acikgoz

• Bahcesehir University, Faculty of Engineering and Natural Sciences, Beşiktaş, Istanbul, Turkey
• Department of Chemistry, Rutgers University, Newark, New Jersey 07102, USA

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Identifiers

DOI

10.12693/APhysPolA.131.366