1. Institute of Ceramics and Glass (ICV‐CSIC) Kelsen 5 28049 Madrid Spain
2. Institute of ThermomechanicsCzech Academy of Sciences Dolejškova 5 18200 Prague Czech Republic
3. Forschungszentrum Jülich GmbHInstitute of Energy and Climate ResearchMaterials Synthesis and Processing (IEK‐1) 52425 Jülich Germany