Vertically Graded Anisotropy in Co/Pd Multilayers

Abstract

Depth-grading of magnetic anisotropy in perpendicular magnetic media has been predicted to reduce the field required to write data without sacrificing thermal stability. To study this prediction, we have produced Co/Pd multilayers with depth-dependent Co layer thickness. Polarized neutron reflectometry shows that the thickness grading results in a corresponding magnetic anisotropy gradient. Magnetometry reveals that the anisotropy gradient promotes domain nucleation upon magnetization reversal - a clear experimental demonstration of the effectiveness of graded anisotropy for reducing write-field.

References in corpus (5)

• Anisotropy Dependence of Irreversible Switching in Fe/SmCo and FeNi/FePt Exchange Spring Magnet Films
• Exchange coupled perpendicular media
• Reversal-Field Memory in the Hysteresis of Spin Glasses
• Frustration Driven Stripe Domain Formation in Co/Pt Multilayer Films
• Direct Observation of Magnetic Gradient in Co/Pd Pressure-Graded Media

Cited by in corpus (15)

• Skyrmions in Magnetic Multilayers
• Beyond the Interface Limit: Structural and Magnetic Depth Profiles of Voltage-Controlled Magneto-Ionic Heterostructures
• Magnetic Structure in Fe/Sm-Co Exchange Spring Bilayers with Intermixed Interfaces
• Spatial evolution of the ferromagnetic phase transition in an exchange graded film
• Tuning Perpendicular Anisotropy Gradient in Co/Pd Multilayers by Ion Irradiation
• Magnetic Yoking and Tunable Interactions in FePt-Based Hard/Soft Bilayers
• Accessing Different Spin-Disordered States using First Order Reversal Curves
• Growth-Induced In-Plane Uniaxial Anisotropy in V${}_2$O${}_3$/Ni Films
• Magnetization reversal in Kagome artificial spin ice studied by first-order reversal curves
• Magnetic properties of Co/Ni-based multilayers with Pd and Pt insertion layers
• Skyrmion generation from irreversible fission of stripes in chiral multilayer films
• First-Order Reversal Curves of the Magnetostructural Phase Transition in FeTe
• Deposition Order Dependent Magnetization Reversal in Pressure Graded Co/Pd films
• Controlling magnetic configuration in soft-hard bilayers probed by polarized neutron reflectometry
• Effective anisotropy gradient in pressure graded [Co/Pd] multilayers