scholarly journals Areal density optimizations for heat-assisted magnetic recording of high-density media

2016 ◽  
Vol 119 (22) ◽  
pp. 223903 ◽  
Author(s):  
Christoph Vogler ◽  
Claas Abert ◽  
Florian Bruckner ◽  
Dieter Suess ◽  
Dirk Praetorius
Keyword(s):  
Magnetic Recording ◽  
Areal Density ◽  
High Density ◽  
Heat Assisted Magnetic Recording

Transient Thermal Response of the Media by Free Space Laser Heating in Heat Assisted Magnetic Recording

2016 ◽  
Author(s):  
Shaomin Xiong ◽  
Robert Smith ◽  
Na Wang ◽  
Dongbo Li ◽  
Erhard Schreck ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Heat Conduction Problem ◽  
Temperature Response ◽  
Thermal Response ◽  
Areal Density ◽  
Heat Assisted Magnetic Recording ◽  
Lumped Model ◽  
The Media ◽  
Transient Thermal ◽  
Transient Thermal Response

Heat assisted magnetic recording (HAMR) promises to deliver higher storage areal density than the current perpendicular magnetic recording (PMR) product. A laser is introduced to the HAMR system to heat the high coercively magnetic media above the Curie temperature (Tc) which is as high as 750 K in order to enable magnetic writing. The thermal response of the media becomes very critical for the success of the data writing process. In this paper, a new method is proposed to understand the transient thermal behavior of the HAMR media. The temperature response of the media is measured based on thermal erasure of the magnetically written signal. A lumped model is built to simplify the heat conduction problem to understand the transient thermal response. Finite element modeling (FEM) is implemented to simulate the transient thermal response of the media due to the laser pulse heating. The experimental and simulation results show fairly good agreement.

Areal-Density Limits for Heat-Assisted Magnetic Recording and Perpendicular Magnetic Recording

2016 ◽  
Vol 52 (7) ◽  
pp. 1-4 ◽  
Author(s):  
Chris Rea ◽  
Pradeep Subedi ◽  
Kaizhong Gao ◽  
Hua Zhou ◽  
Pu-Ling Lu ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Areal Density ◽  
Heat Assisted Magnetic Recording ◽  
Perpendicular Magnetic Recording

High Density Heat-Assisted Magnetic Recording Media and Advanced Characterization—Progress and Challenges

2015 ◽  
Vol 51 (11) ◽  
pp. 1-9 ◽  
Author(s):  
Ganping Ju ◽  
Yingguo Peng ◽  
Eric K. C. Chang ◽  
Yinfeng Ding ◽  
Alexander Q. Wu ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Advanced Characterization ◽  
High Density ◽  
Recording Media ◽  
Magnetic Recording Media ◽  
Heat Assisted Magnetic Recording
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