New hard disk write head analytical technology can increase hard disk capacities
Tohoku University / Science Daily
https://www.sciencedaily.com/releases/2021/01/210107094559.htm
HDD Refresher
NTFS.com Hard Disk Drive Basics
http://ntfs.com/hard-disk-basics.htm
Frank G. Fiamingo / The Ohio State University
https://www2.cs.duke.edu/csl/docs/sysadmin_course/sysadm-30.html
HDD Format / PCtechguide.com
https://www.pctechguide.com/hard-disks/hard-disk-hard-drive-format-the-tracks-and-sectors-of-the-hard-disk
Discovering Hard Disk Physical Geometry through Microbenchmarking
Henry Wong / Stuffedcow.net
https://blog.stuffedcow.net/2019/09/hard-disk-geometry-microbenchmarking/
HDD inside: Tracks and Zones
Artem Rubtsov / HDDScan
https://hddscan.com/doc/HDD_Tracks_and_Zones.html
Spin-torque oscillators
Spin-torque oscillator using a perpendicular polarizer and a planar free layer
D Houssameddine et al / Nature Materials
https://pubmed.ncbi.nlm.nih.gov/17468761/
Study of spin-torque nano-oscillators driven by nonlocal spin injection
Boris Divinskiy / WWU M ̈unster
Spin Torque Oscillator Based BFSK Modulation
R. Ma et al / Technische Universit ̈at Dresden
https://core.ac.uk/download/pdf/236378884.pdf
Applied Spintronics Lab / The Chinese University of Hong Kong
https://mypage.cuhk.edu.cn/academics/aspin/Spin%20torque%20oscillators.html
Spin-orbit torque–driven propagating spin waves
H. Fulara et al / Scene Advances, Applied Physics
https://advances.sciencemag.org/content/5/9/eaax8467
Magnetic vortex excitation as spin torque oscillator and its unusual trajectories
Natarajan, Kanimozhi et al / NASA Astrophysics Data System, Harvard
https://ui.adsabs.harvard.edu/abs/2018JMMM..453..168N/abstract
Spin torque oscillator for microwave assisted magnetization reversal
Taniguchi, Tomohiro, Japanese Journal of Applied Physics
https://ui.adsabs.harvard.edu/abs/2018JaJAP..57e3001T/abstract
DESIGN AND DEVELOPMENT OF SPIN-TORQUE-OSCILLATOR FOR MICROWAVE ASSISTED MAGNETIC RECORDING
H. SEPEHERI-AMIN et al / Japan National Institute for Materials Science / NASA Astrophysics Data System, Harvard
https://www.nims.go.jp/mmu/tmrc2017/att/E2.pdf
Frequency control of a spin-torque oscillator using magnetostrictive anisotropy
Min Gyu Albert Park / Applied Physics Letters, AIP
https://aip.scitation.org/doi/10.1063/1.4939743
Analysis of Switchable Spin Torque Oscillator for Microwave Assisted Magnetic Recording
Mingsheng Zhang et al / Hindawi
https://www.hindawi.com/journals/acmp/2015/457456/
State diagram of spin-torque oscillator with perpendicular reference layer and planar field generation layer
Mengwei Zhang et al / Progress in Natural Science, Science Direct
https://www.sciencedirect.com/science/article/pii/S1002007115000556
Synchronization and chaos in spin torque oscillator with two free layers
Tomohiro Taniguchi / AIP Advances
https://aip.scitation.org/doi/10.1063/1.5127766
Composite media with reduced write temperature for heat assisted magnetic recording
N.A.Natekar / Journal of Magnetism and Magnetic Materials, Science Direct
https://www.sciencedirect.com/science/article/pii/S0304885319307346?via%3Dihub
Review Article: FePt heat assisted magnetic recording media
Dieter Weller / Journal of Vacuum Science & Technology
https://avs.scitation.org/doi/10.1116/1.4965980
Curie Temperature
Science Struck
https://sciencestruck.com/curie-temperature
Curie Temperature
https://www.sciencedirect.com/topics/physics-and-astronomy/curie-temperature
Section 16: Magnetic properties of materials (continued)
E.Y.Tsymbal / Physics 927 University of Nebraska–Lincoln
https://unlcms.unl.edu/cas/physics/tsymbal/teaching/SSP-927/Section%2016_Magnetic_Properties_2.pdf
Worldwide unit shipments of hard disk drives (HDD) from 1976 to 2025
Statista
https://www.statista.com/statistics/398951/global-shipment-figures-for-hard-disk-drives/
Data center storage capacity worldwide from 2016 to 2021, by segment
Statista
Seagate's shipped hard disk drives (HDDs) capacity worldwide from FY 2015 to FY 2021, by quarter
Statista
https://www.statista.com/statistics/795771/worldwide-seagate-hard-drive-capacity-shipped/
Horizon Technology
HDD Remains Dominant Storage Technology
HAMR Drive Performance and Integration Challenges
Tim Rausch et al, IEEE Transactions on Magnetics
https://ieeexplore.ieee.org/document/6416994
HAMR Performance and Integration Challenges
Chris Rea et al / IEEE Transactions on Magnetics
https://ieeexplore.ieee.org/document/6774942
Laser Heating-Induced Degradation of Ultrathin Media Carbon Overcoat for Heat-Assisted Magnetic Recording
Yansheng Ma et al / IEEE Transactions on Magnetics
https://ieeexplore.ieee.org/abstract/document/7307196
Temperature-Induced Near-Field Transducer Failure in Heat-Assisted Magnetic Recording
Tan D. Trinh et al / IEEE Transactions on Magnetics
https://ieeexplore.ieee.org/document/9062596
Head-disk Interface Study for Heat Assisted Magnetic Recording (HAMR) and Plasmonic Nanolithography for Patterned Media
Xiong, Shaomin / NASA Astrophysics Data System, Harvard, ProQuest
https://ui.adsabs.harvard.edu/abs/2014PhDT........28X/abstract
Seagate shipping HAMR drives
Desire Athow / Techradar Pro
https://www.techradar.com/news/seagate-confirms-20tb-hamr-hard-disk-drives-have-been-shipped
Anton Shilov / Toms Hardware
https://www.tomshardware.com/news/seagate-ships-hamr-hdds-increases-dual-actuator-shipments
Toshiba shipping first MAMR drive
Anton Shilov / Anandtech
https://www.anandtech.com/show/16496/toshiba-unveils-worlds-first-fc-mamr-hdd-18-tb
Toshiba MAMR drive details
Toshiba MAMR and HAMR
Western Digital EAMR
https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/collateral/tech-brief/technology-brief-energy-assisted-magnetic-recording.pdf
Seagate EAMR
https://blog.seagate.com/enterprises/energy-assisted-magnetic-recording-will-solve-the-need-for-capacity/
Toshiba's HDD Tech Roadmap: A Mix of SMR, MAMR, TDMR, and HAMR
Anton Shilov / Anandtech
https://www.anandtech.com/show/14077/toshiba-hdd-roadmap-smr-mamr-tdmr-and-hamr
Toshiba's HDD Tech Roadmap includes SMR, MAMR, TDMR, and HAMR
https://www.datarecovery.net/newsletters/toshiba-hdd-roadmap.aspx
Seagate's Roadmap: The Path to 120 TB Hard Drives
Anton Shilov / Anandtech
https://www.anandtech.com/show/16544/seagates-roadmap-120-tb-hdds
Come to MAMR! Western Digital unfurls HDD tech roadmap
Chris Mellor / Blocks and Files
https://blocksandfiles.com/2020/01/28/western-digital-gives-hdd-technology-roadmap-lesson/
HAMR or MAMR? Western Digital’s disk drive roadmap could go either way
Chris Mellor / Blocks and Files
https://blocksandfiles.com/2019/12/17/western-digital-disk-drive-roadmap/
Seagate: High Capacity HDDs Have Better TCO Than SSDs
Tom Coughlin / Forbes
Toshiba Joins The Energy Assisted Recording Club
Tom Coughlin / Forbes
In 2020 HDD Companies Shipped Over 1ZB Of Storage Capacity
Tom Coughlin / Forbes
https://www.forbes.com/sites/tomcoughlin/2021/02/07/in-2020-hdd-companies-shipped-over-1zb-of-storage-capacity/?sh=5c82b46e4894
Seagate's HDD roadmap teases 100TB drives by 2025
Mark Tyson / Hexus
https://hexus.net/tech/news/storage/123953-seagates-hdd-roadmap-teases-100tb-drives-2025/
Continuing Hard Disk Drive Innovation from Western Digital
Gestalt IT
HDD’s big comeback
Nick Powling, Computer Weekly
https://www.computerweekly.com/microscope/news/252482331/HDDs-big-comeback
Seagate, TDK show off HAMR to jam more data into hard drives
Stephen Lawson, Computer World
HAMR vs. MAMR, and the future of high-capacity hard drives
Stacey Peterson, Search Storage
Toshiba Unveils First FC-MAMR HDD: 18 TB, Helium Filled
Hacker News
https://news.ycombinator.com/item?id=26222938