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Growth and EPR properties of KSm(WO4)2 and KEr(WO4)2 single crystals

100%
Leniec G., Skibiński T., Kaczmarek S., Iwanowski P., Berkowski M.
Open Physics
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2012
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vol. 10
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issue 2
500-505
EN
Growth conditions and electron paramagnetic resonance investigations of two well oriented KSm(WO4)2 and KEr(WO4)2 single crystals have been presented and discussed. Hyperfine structure of Sm3+ ion was detected and analyzed for angular and temperature dependences. EPR spectra of KEr(WO4)2 and its angular dependence showed the presence of 5 magnetically nonequivalent Er centers in the crystal. A change in the type of magnetic interactions was analyzed using mixed (Gaussian and Lorentzian) fits of the EPR spectra.
2
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EPR and optical properties of KYb(WO4)2 and KTb0.2Yb0.8(WO4)2 single crystals

86%
Kaczmarek S., Macalik L., Fuks H., Leniec G., Skibiński T., Hanuza J.
Open Physics
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2012
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vol. 10
|
issue 2
492-499
EN
Well oriented KYb(WO4)2 and KTb0.2Yb0.8(WO4)2 single crystals have been investigated for their magnetic and optical properties using the Raman and EPR techniques. The registered EPR signal is dominated by three lines ascribed to ytterbium ions: one main and two satellites. Tb ions, although non-paramagnetic, distinctly modify magnetic properties of the KYb(WO4)2 single crystal. Basic parameters of the spin Hamiltonian, including Zeeman and hyperfine terms (g and A matrices) as well the spatial orientation between principal and crystallographic axes systems were determined for both crystals.
3
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Growth and EPR properties of ErVO4single crystals

86%
Leniec G., Kaczmarek S. M., Berkowski M., Głowacki M., Skibiński T., Bojanowski B.
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issue 3
405-410
EN
Single crystals of ErVO4 were grown by the Czochralski method under ambient pressure in a nitrogen atmosphere. Obtained crystals were transparent with strong pink coloring. Electron paramagnetic resonance (EPR) spectra were recorded as a function of the applied magnetic field. Temperature and angular dependences of the EPR spectra of the samples in the 3–300 K temperature range were analyzed applying both Lorentzian––Gauss approximation for diluted medium and Dyson for dense magnetic medium. EPR-NMR program was done to find local symmetry and spin Hamiltonian parameters of erbium ions.
4
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Synthesis and spectroscopic properties of LiIn(WO4)2 nanopowders and single crystals doped with chromium(III) ions

73%
Skibiński T., Fuks H., Kaczmarek S., Bodziony T., Hermanowicz K., Maczka M., Ptak M., Hanuza J.
Open Physics
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2013
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vol. 11
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issue 11
1559-1566
EN
LiIn(WO4)2 single crystals and nanopowders doped with chromium(III) ions were synthesized and investigated, including their EPR spectra and magnetic properties. The EPR spectra have shown low and high field lines attributed to isolated chromium ions with an electron spin S=3/2 and complex chromium centers with higher spin value, respectively. Magnetic susceptibility measurements revealed an almost linear dependence on the magnetic field. The electron resonance and magnetic properties have been related to the structural and spectroscopic data of the studied material.
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