Wu, J. Choi, J. Scholl, A. Doran, A. Arenholz, E. Wu, Y. Z. Won, C. Hwang, Chanyong Qiu, Z. Q. 2024-01-20T21:04:46Z 2024-01-20T21:04:46Z 2021-09-03 2009-07 2469-9950 https://pubs.kist.re.kr/handle/201004/132365 Co/NiO/Fe trilayers are grown on Ag(001) substrate using molecular-beam epitaxy and investigated by element-specific magnetic domain images using x-ray magnetic circular dichroism and x-ray magnetic linear dichroism techniques. By comparing the Co, Fe, and NiO magnetic domain images, we identify that the anomalous Co-Fe interlayer coupling from a 90 degrees coupling to a collinear coupling with increasing the NiO film thickness is due to a transition from a collinear to 90 degrees coupling at the NiO/Fe interface while retaining a 90 degrees coupling at the Co/NiO interface. Uncompensated Ni spins are found at the Co/NiO interface but are absent at the NiO/Fe interface. No evidence of spiral NiO spin structure is found in this Co/NiO/Fe sandwich. English AMER PHYSICAL SOC QUANTUM-WELL STATES LARGE MAGNETORESISTANCE TUNNELING JUNCTION EXCHANGE BIAS THIN-FILMS SUPERLATTICES TEMPERATURE ANISOTROPY DICHROISM Element-specific study of the anomalous magnetic interlayer coupling across NiO spacer layer in Co/NiO/Fe/Ag(001) using XMCD and XMLD Article 10.1103/PhysRevB.80.012409 1 Physical Review B, v.80, no.1 Physical Review B 80 1 scie scopus 000268617100014 2-s2.0-69549101634 Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Materials Science Physics Article QUANTUM-WELL STATES LARGE MAGNETORESISTANCE TUNNELING JUNCTION EXCHANGE BIAS THIN-FILMS SUPERLATTICES TEMPERATURE ANISOTROPY DICHROISM cobalt ferromagnetic materials interface magnetism iron magnetic circular dichroism magnetic structure magnetic thin films molecular beam epitaxial growth nickel compounds silver X-ray absorption spectra