Bias sputtering of granular L1₀-FePt films with hexagonal boron nitride grain boundaries.

ABSTRACT: In this paper, we present an experimental study of L1₀-FePt granular films with crystalline boron nitride (BN) grain boundary materials for heat assisted magnetic recording (HAMR). It is found that application of a RF substrate bias (V_DC = -15 V) yields the formation of hexagonal boron nitride (h-BN) nanosheets in grain boundaries, facilitating the columnar growth of FePt grains during sputtering at high temperatures. The h-BN monolayers conform to the side surfaces of columnar FePt grains, completely encircling individual FePt grains. The resulting core-shell FePt-(h-BN) nanostructures appear to be highly promising for HAMR application. The high thermal stability of h-BN grain boundaries allows the deposition temperature to be as high as 650℃ such that high order par

SUBMITTER: Xu C 

PROVIDER: S-EPMC10329668 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature