[Journal of the Physical Society of Japan Proceedings of the 14th International Conference on Muon Spin Rotation, Relaxation and Resonance (μSR2017) - Sapporo, Japan (June 25-30, 2017)] Proceedings of the 14th International Conference on Muon Spin Rotation, Relaxation and Resonance (μSR2017) - μSR Study of Magnetism in the As-Prepared and Non-Superconducting \(T^{ \star }\)-La 0.9 Eu 0.9 Sr 0.2 CuO 4