Journal Article IRIXS beamline RIXS Research Support, Non-U.S. Gov't beamlines PETRA III, DESY Petra III, DESY Research Support, U.S. Gov't, Non-P.H.S. THz emission spectroscopy X-ray diffraction complex functional materials crystal structure depth profiling interfacial exchange coupling layered conducting transition metal oxides magnetic fan structures manganite superlattices neutron Larmor diffraction neutron spin–echo nickelates non-destructive characterization noncollinear magnetism off-cut thin films polycrystalline samples powder diffraction resonant X-ray reflectivity spectrograph superlattices synthetic antiferromagnets terahertz generation