Low loss MgAl2O4 ceramics for terahertz windowsS.V. Egorov, A.A. Sorokin, I.E. Ilyakov, B.V. Shishkin, V.V. Parshin, S.S. Balabanov and A.V. BelyaevEPJ Web Conf., 187 (2018) 01004DOI: https://doi.org/10.1051/epjconf/201818701004