Optical forces in heat-assisted magnetic recording head-disk interface

RM Tom, R Smith, O Ruiz, Q Dai, DB Bogy - Scientific Reports, 2023 - nature.com
A main challenge in Heat-Assisted Magnetic Recording technology is the build-up of
contaminants called smear on the near field transducer. In this paper, we investigate the role …

In-situ sub-angstrom characterization of laser-lubricant interaction in a thermo-tribological system

Q Cheng, S Rajauria, E Schreck, R Smith… - Communications …, 2024 - nature.com
Laser-lubricant interaction has been a critical reliability issue in a thermo-tribological system
named heat-assisted magnetic recording, one of the next generation hard disk drive …

Two strategies to mitigate thermally-induced material buildup in heat-assisted magnetic recording

Q Cheng, RM Tom, DB Bogy - Tribology Letters, 2023 - Springer
Heat-assisted magnetic recording (HAMR), one of the promising hard disk drive
technologies to achieve areal density> 10 Tb/in 2, integrates a laser across its head-disk …

A Numerical Simulation of PFPE Lubricant Kinetics in HAMR Air Bearing

RM Tom, Q Cheng, DB Bogy - Tribology Letters, 2024 - Springer
This report investigates the kinetics of lubricant molecules in the HAMR air bearing to
understand the initiation and growth of PFPE contamination on the head surface. The …

Effects of Oxygen on Smear Formation in Heat Assisted Magnetic Recording System

K Yakata, H Kurafuji, H Tani, R Lu, S Koganezawa… - Tribology …, 2022 - jstage.jst.go.jp
Heat-assisted magnetic recording (HAMR) is expected to be a realistic next-generation
technology for increasing the recording density of hard disks. However, the magnetic layer is …

Head Smear Reduction in Head-Disk Interface of HAMR using External AC Electric Field

H Tani, Y Miyuki, S Kawada, R Lu… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
Head smear in a head-disk interface of the heat-assisted magnetic recording disturbs the
head flyability. This study focused on the effect of an external AC electric field on reducing …

Ballistic material transport in HAMR head-disk interface

RM Tom, DB Bogy - 2023 IEEE 34th Magnetic Recording …, 2023 - ieeexplore.ieee.org
Smear is a key issue hindering the reliability of HAMR drives. Under ultra-low spacing, the
random thermal motions by particles can lead to a smear generation on the head. To study …

Tunability of recording head protrusion by use of embedded dual heaters

Q Cheng, DB Bogy - Tribology Letters, 2022 - Springer
In hard disk drives, a recording head and a recording disk constitute a high-speed sliding
system: head–disk interface, where the head with a prescribed thermal protrusion on its …

A hybrid simulation for smear growth on hamr heads

RM Tom, Q Cheng, DB Bogy - 2023 IEEE International …, 2023 - ieeexplore.ieee.org
Modeling the smear growth in the write heads of the Heat Assisted Magnetic Recording
(HAMR) Disk Drives is an essential tool for understanding the mechanisms of smear …

A Particle-Level Study of Smear Buildup in Heat-Assisted Magnetic Recording Disk Drives

RM Tom - 2024 - search.proquest.com
Ever since the first hard disk drive (HDD) was invented in 1956, it has played a dominant
role in global data storage needs. Conventional HDDs, however, have reached the …