Buffer layer effect on magnetic domain structure and coercivity in epitaxial Co/Pt multilayers

Optimization of Co/Pt multilayers for applications of current-driven domain wall propagation

“…Overall we found that the coercivity increased from 120 to 210 Oe as the buffer layer thickness increased from 47 to 88 Å , a change that can be attributed to an improvement in the fcc (111) texturing of the Co layer with thicker buffers. 11,[16][17][18][19] In addition, a reduction in Co/Pt interface roughness (c.f., Fig. 1(b)) can enhance interfacial anisotropy, which should also contribute to an increase in coercivity.…”

Hydrogen-Controlled Spin Reorientation Transition in a Nanometer-Thick FePd Layer on Co/[Pt/Co]4/Pt Multilayers for Applications in Spintronics

“…The H c values increased from 125 to 755 Oe as the thickness of the Pt buffer layer increased from 1 to 8 nm. These results can be attributed to the improvement in the fcc (111) structure of the Co layer due to the thicker buffer. , In addition, reduced roughness in the Co/Pt interface enhances interfacial anisotropy, which increases coercivity . The magnetic hysteresis loops became more square as the thickness of the Pt buffer layer increased, which indicates that PMA strength is positively correlated with the thickness of the Pt layer.…”

“…21,22 In addition, reduced roughness in the Co/Pt interface enhances interfacial anisotropy, which increases coercivity. 23 The magnetic hysteresis loops became more square as the thickness of the Pt buffer layer increased, which indicates that PMA strength is positively correlated with the thickness of the Pt layer. These results clearly indicate that the PMA is sensitive to the thickness of the buffer Pt layer and is significantly stronger for t Pt = 8 nm than for t Pt = 1 nm.…”