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

C Xu, BSDCS Varaprasad, DE Laughlin, JG Zhu - Scientific Reports, 2023 - nature.com
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 …

Data-driven optimization of FePt heat-assisted magnetic recording media accelerated by deep learning TEM image segmentation

N Kulesh, A Bolyachkin, I Suzuki, YK Takahashi… - Acta Materialia, 2023 - Elsevier
The main bottleneck for heat-assisted magnetic recording (HAMR) to achieve a potential
areal density of 4 Tb/in 2 is the difficulty in obtaining FePt-X nanogranular media with an …

Magnetic properties and microstructure of FePt (BN, X, C)(X= Ag, Re) films

JL Tsai, CY Sun, JH Lin, YY Huang, HT Tsai - Nanomaterials, 2023 - mdpi.com
A sputtered FePt (BN, Re, C) film, here boron nitride (BN), was compared to a reference
sample FePt (BN, Ag, C). Intrinsically, these films illustrate a high anisotropy field (Hk) and …

Improving magnetic properties of FeCrCo films by facilitating the internal α-γ phase transition through Pt diffusion

D Zhao, XL Xu, Y Cao, MY Zhai, S Lu, P Kang, JT Liu… - Acta Materialia, 2025 - Elsevier
FeCrCo magnetic films are suitable candidates for use as magnetic code disk materials in
high-accuracy magnetic encoders. The performance and material uniformity of FeCrCo films …

Fabrication of 16nm-thick granular L10 FePt-hBN thin film media

C Xu, BSDCS Varaprasad… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
Hexagonal boron nitride (BN) has recently been investigated as a promising grain boundary
material (GBM) for the nanogranular structure of L10-FePt-based heat-assisted magnetic …

[HTML][HTML] FePt–BN granular HAMR media with high grain aspect ratio and high L1 ordering on corning LotusTM NXT glass

BSD Varaprasad, C Xu, MH Huang, DE Laughlin… - AIP Advances, 2023 - pubs.aip.org
Fabricating highly ordered tall L1 0–FePt with a small grain pitch distance on a commercially
available glass substrate is crucial to realize heat-assisted magnetic recording (HAMR) …

Grain density control in FePt granular films for heat-assisted magnetic recording media

I Suzuki, YK Takahashi - Japanese journal of applied physics, 2022 - iopscience.iop.org
To realize high areal density, hard disk drives larger than 4 Tbit in− 2, ultrafine FePt grains of
less than 5 nm and grain density larger than 24 T in− 2 are required. Although there have …

Exchange-coupled -//- nanogranular films as potential heat-assisted-magnetic-recording media with reduced writing temperature

D Ogawa, A Bolyachkin, AR Dilipan, N Kulesh… - Physical Review …, 2024 - APS
Heat-assisted magnetic recording (HAMR) is a promising high-density-data-storage
technology whose intensive practical deployment requires a perfect balance of many factors …

Thermal Conductance Analysis of the [FePt/h-BN/FePt] Interface

C Xu, E Zhang, BY Yang… - IEEE Transactions …, 2024 - ieeexplore.ieee.org
Heat-assisted magnetic recording (HAMR) requires a high thermal gradient in the recording
media to suppress jitter noises. The FePt-(h-BN) granular film has been proposed as a …

Comparison of Shingled Heat-Assisted Magnetic Recording and Three-Dimensional Heat-Assisted Magnetic Recording

T Kobayashi, Y Nakatani, Y Fujiwara - Journal of the Magnetics …, 2023 - jstage.jst.go.jp
In this work we examine grain arrangement and medium structure, temperature profile
during writing, adjacent track interference, information stability during 10 years of archiving …