1. Faculty of Material Science and Ceramics, University of Mining and Metallurgy, PL‐30059 Cracow, Poland
2. Regional Laboratory of Physicochemical Analysis and Structural Research, Jagiellonian University, PL‐30059 Cracow, Poland
3. Present address: Center for Process Analytical Chemistry and Sensor Technology (ProSens), Åbo Akademi University, F‐20500 Åbo, Finland