IR-spectroscopy, thermophysical and mechanical properties of glasses in the system Na&lt;sub&gt;2&lt;/sub&gt;O/BaO/TiO&lt;sub&gt;2&lt;/sub&gt;/B&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;/SiO&lt;sub&gt;2&lt;/sub&gt;/Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;
Journal of Chemical Technology and Metallurgy