Comparative study of structural, optical and magnetic properties of Er.sup.3+./sup. doped yttrium gallium borates

0536163 - FZÚ 2021 RIV NL eng J - Journal Article
Prokhorov, Andriy - Zubov, E.E. - Chernush, L.F. - Minikayev, R. - Babin, Vladimir - Nikl, Martin - Zajarniuk, T. - Szewczyk, A. - Savchenko, Dariia - Lančok, Ján - Prokhorov, A.D.
Comparative study of structural, optical and magnetic properties of Er³⁺ doped yttrium gallium borates.
Results in Physics. Roč. 19, Dec (2020), s. 1-10, č. článku 103247. ISSN 2211-3797. E-ISSN 2211-3797
R&D Projects: GA MŠMT(CZ) EF16_019/0000760; GA MŠMT EF16_013/0001406; GA ČR GA19-16315S
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760; OP VVV - SAFMAT(XE) CZ.02.1.01/0.0/0.0/16_013/0001406
Institutional support: RVO:68378271
Keywords : EPR * RAB * X-ray diffraction * RL * TSL * multiferroics * rare-earth ions * aluminum borates * gallium borates * spin hamiltonian parameters
OECD category: Physical chemistry
Impact factor: 4.476, year: 2020
Method of publishing: Open access

The paper presents the results of a comprehensive study of yttrium gallium borate (YGa3(BO3)4) crystals lowdoped (0.2 wt%) with erbium (Er3+) ions by in-situ X-ray diffraction (XRD), radioluminescence (RL), thermally stimulated luminescence (TSL) and electron paramagnetic resonance (EPR) techniques. Structural and elastic properties of YGa3(BO3)4: Er3+ crystals measured by the XRD method in the temperature range from 300 K to 1073 K have revealed the temperature variation of the volume thermal expansion coefficient. The analysis of RL spectra allowed us to assume the existence of the characteristic Er3+-related emission band located in the nearinfrared region. The TSL spectra revealed strong peaks at low temperatures due to shallow traps and much less intense bands located above room temperature. Measurements of heat capacity in a wide temperature range allowed us to determine the Debye temperature θD ≈ 332 K.
Permanent Link: http://hdl.handle.net/11104/0313983