Phase Relations and Solid Solutions in the YbBO3–ScBO3 System
Zholdas Y. Kuznetsov A. Bolatov A. Jamous A. Svetlichnyi V. Kokh K.
January 2026Multidisciplinary Digital Publishing Institute (MDPI)
Inorganics
2026#14Issue 1
The YbBO3–ScBO3 system was studied across the selected compositional range by means of solid-state synthesis, powder X-ray diffraction (XRD), differential scanning calorimetry (DSC), and photoluminescence spectroscopy. XRD of annealed samples at 1300–1400 °C revealed that the system reaches equilibrium and consists of two phases, YbBO3 and ScBO3, separated by a two-phase region. The lattice parameters show a limited solubility between Yb3+ and Sc3+ ions. DSC measurements display a broad endothermic feature at approximately 1480 °C, corresponding to the eutectic point. Near-infrared emission excited at 975–980 nm originates from Yb3+ ions and shows the highest intensity for pure YbBO3 and for the Sc-rich composition, while intermediate samples exhibit weaker luminescence.
infrared luminescent material , rare-earth borates , scandium borate , ytterbium borate
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Center of Physical-Chemical Methods of Research and Analysis, Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
Sobolev Institute of Geology and Mineralogy SB RAS, Novosibirsk, 630090, Russian Federation
Tomsk State University, Tomsk, 634050, Russian Federation
Center of Physical-Chemical Methods of Research and Analysis
Sobolev Institute of Geology and Mineralogy SB RAS
Tomsk State University
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Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026