학술논문

SNR Impact of Magnetic Capping Layer in Granular FePt-L10 Media
Document Type
Conference
Source
2023 IEEE International Magnetic Conference - Short Papers (INTERMAG Short Papers) Magnetic Conference - Short Papers (INTERMAG Short Papers), 2023 IEEE International. :1-2 May, 2023
Subject
Fields, Waves and Electromagnetics
Magnetic films
Heating systems
Media
Magnetic moments
Micromagnetics
Magnetic recording
Signal to noise ratio
HAMR
FePt
L10
SNR
Language
Abstract
In this work, we present a micromagnetic modeling study on a scheme to enhance medium signal-to-noise ratio in heat assisted magnetic recording. By adding a relatively thin magnetic capping layer on top of FePt-L10 granular thin film, recording performance can be significantly improved, especially at high linear densities, provided the capping layer has significant magnetic moment during recording.