کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1801711 1024575 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Temperature and pressure dependences of EPR spectra of Gd3+ ion doped in the EuAl3(BO3)4 monocrystal
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Temperature and pressure dependences of EPR spectra of Gd3+ ion doped in the EuAl3(BO3)4 monocrystal
چکیده انگلیسی

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.


► Parameters of EPR spectrum of Gd3+ ion replacing Eu3+ ion in EuAl3(BO3)4 crystal.
► Interaction of paramagnetic ion with nuclear moments of boron and aluminium atoms.
► The b20 parameter of spin Hamiltonian and the bond angle depend on pressure.
► Change in the bond angle contributes basically to change in the b20 parameter.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 323, Issue 11, June 2011, Pages 1546–1550
نویسندگان
, , , , ,