Experimental Demonstration of a Low Optical Loss AlN Heatsink for Reduction of HAMR NFT Self-Heating

W Zhang, JA Bain - IEEE Transactions on Magnetics, 2024 - ieeexplore.ieee.org
… It leverages precise laser heating to locally increase the temperature of a high-anisotropy …
challenges of HAMR - NFT self-heating issue. During operation, as the NFT focuses light to …

HAMR thermal reliability via inverse electromagnetic design

S Bhargava, E Yablonovitch - arXiv preprint arXiv:1407.3405, 2014 - arxiv.org
… the temperature rise in the NFT versus the temperature rise in … For a thermally stable NFT
and write-head, this ratio must be … of magnitude improvements to reliability by reducing the NFT

FePt-based HAMR media with a function layer for better thermal control

J Hu, KM Cher, B Varghese, B Xu, C Lim… - IEEE Transactions …, 2015 - ieeexplore.ieee.org
HAMR technology provides a technical solution to the fundamental constraints of the thermal
stability … from the deterioration of the NFT under high temperature. The main reasons are …

Lowering HAMR near-field transducer temperature via inverse electromagnetic design

S Bhargava, E Yablonovitch - IEEE Transactions on magnetics, 2015 - ieeexplore.ieee.org
… TO ENSURE thermal stability of data over a 10-year lifetime in … a lowtemperature HAMR
write head is to make major NFTNFT temperature could result in exponential improvements

Materials for heat-assisted magnetic recording heads

MC Kautzky, MG Blaber - MRS bulletin, 2018 - cambridge.org
… of plasmonic NFTs; we focus here on the “lollipop” NFT, … (ABS recession, chemical and
thermal stability). Input couplers are … of the materials challenges associated with HAMR recording …

Numerical investigation of thermal effects on a HAMR head-disk interface

KS Myo, W Zhou, X Huang… - Information …, 2014 - asmedigitalcollection.asme.org
… study thermal effects of these structures on the HAMR head-… (FH) changes due to the heat
loss in the waveguide and NFT. … , in improved HAMR slider head designs, an additional heat

Materials for heat-assisted magnetic recording

MT Kief, RH Victora - MRS Bulletin, 2018 - cambridge.org
… For example, current perpendicular products use an … of different materials that promote
better thermal stability, better … Since HAMR media temperatures exceed 400C and the NFT can …

Nanostructure, structural stability, and diffusion characteristics of layered coatings for heat-assisted magnetic recording head media

J Matlak, E Rismaniyazdi, K Komvopoulos - Scientific reports, 2018 - nature.com
… ), which promises to further increase the areal density to levels of 1–… thermal stability and
corrosion/diffusion resistance of the protective overcoat on the NFT and WP elements of HAMR

[PDF][PDF] Temperature Induced Near-field Transducer (NFT) Failure in Heat-assisted Magnetic Recording (HAMR)

TD Trinh, S Rajauria, R Smith, E Schreck, Q Dai… - yslamac.es
… , we use HAMR disk media and a fully integrated HAMR head … that the temperature at the
headdisk interface is critical to NFT … the HAMR system is increased, the resulting increase in the …

System and Media Optimizations for improved HAMR Performance

N Natekar - 2020 - search.proquest.com
Thermal stability factors for different HAMR media assuming coherent…...138 rotation. A
larger stability … Fig 2.2 (a) describes the HAMR head that includes the laser and NFT while Fig. …