Temperature and pressure dependences of EPR spectra of Gd ion doped in the EuAl3(BO3)4 monocrystal |
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Authors: | AD ProkhorovAA Prokhorov LF ChernyshVP Dyakonov H Szymczak |
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Institution: | a A.A. Galkin Donetsk Physico-Technical Institute, NАNU, 83114 Donetsk, R. Luxembourg Str. 72, Ukraine b Institute of Physics, PAS, 02-668 Warsaw, Al. Lotników 32/46, Poland |
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Abstract: | The ground state of Gd3+ ions substituting for trivalent europium in the EuAl3(BO3)4 single crystal was studied by electron paramagnetic resonance (EPR) over the temperature range of 300-4.2 K and at pressures up to 9 kbar. The EPR spectra were analysed using the spin Hamiltonian of axial symmetry. The following parameters are reported: g=1.981±0.002, b20=280.18±0.12, b40=−12.95±0.08 and b60=0.61±0.12 (at Т=298 K). The distortions of the nearest environment of Gd3+ ion were analysed within the framework of the superposition model of crystal field. |
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Keywords: | EPR spectra Gd3+ ion EuAl3(BO3)4 single crystal Pressure |
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