Lee, DongJoon Jeong, WonMin Yun, DeokHyun Park, Seung-Young Ju, Byeong-Kwon Lee, Kyung-Jin Min, Byoung-Chul Koo, Hyun Cheol Lee, OukJae 2024-01-19T15:03:09Z 2024-01-19T15:03:09Z 2021-09-05 2021-04 1944-8244 https://pubs.kist.re.kr/handle/201004/117210 We investigate the effects of interfacial oxidation on the perpendicular magnetic anisotropy, magnetic damping, and spin-orbit torques in heavy-metal (Pt)/ferromagnet (Co or NiFe)/capping (MgO/Ta, HfOx, or TaN) structures. At room temperature, the capping materials influence the effective surface magnetic anisotropy energy density, which is associated with the formation of interfacial magnetic oxides. The magnetic damping parameter of Co is considerably influenced by the capping material (especially MgO) while that of NiFe is not. This is possibly due to extra magnetic damping via spin-pumping process across the Co/CoO interface and incoherent magnon generation (spin fluctuation) developed in the antiferromagnetic CoO. It is also observed that both antidamping and field-like spin-orbit torque efficiencies vary with the capping material in the thickness ranges we examined. Our results reveal the crucial role of interfacial oxides on the perpendicular magnetic anisotropy, magnetic damping, and spin-orbit torques. English American Chemical Society Effects of Interfacial Oxidization on Magnetic Damping and Spin-Orbit Torques Article 10.1021/acsami.1c00608 1 ACS Applied Materials & Interfaces, v.13, no.16, pp.19414 - 19421 ACS Applied Materials & Interfaces 13 16 19414 19421 scie scopus 000645520700104 2-s2.0-85104935940 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science Article spintronics spin-orbit torque spin-Hall effect Gilbert damping interfacial magnetic oxide magnetic resonance