Micromagnetic Analyses of Effects of Intergranular Magnetostatic and Exchange Interactions on Signal-to-noise Ratio and Thermal Stability in Hard Disk Drive Recording Media PDF Download
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Author: Hong Zhou
Publisher:
ISBN:
Category : Computer storage devices
Languages : en
Pages : 668
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Book Description
Author: Hong Zhou
Publisher:
ISBN:
Category : Computer storage devices
Languages : en
Pages : 668
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Book Description
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 684
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Book Description
Author: Peng Luo
Publisher:
ISBN:
Category : Electromagnetic noise
Languages : en
Pages : 504
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Book Description
Author: Kaizhong Gao
Publisher:
ISBN:
Category : Data disk drives
Languages : en
Pages : 502
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Book Description
Author: T. C. Arnoldussen
Publisher: World Scientific
ISBN: 9789810208653
Category : Technology & Engineering
Languages : en
Pages : 292
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Book Description
This book treats the various aspects of noise from magnetic recording media and the impact on system performance. Several authors present discussions of: materials and processes used to fabricate media for computer data storage, theoretical aspects of noise and micromagnetic behavior, experimental methods and characterization, and system analysis. In the past decade thin film recording media have largely displaced particlate media in rigid disk recording systems. During the same period of time the field has evolved from the prevalent belief that thin film media were virtually noiseless to a detailed understanding of the origin and the manifestation of noise in these new media. This understanding has lead to the ability to make the very low noise media needed in present applications. The present state of understanding of both particulate and thin film media is summarized.
Author: Gaspare Varvaro
Publisher: CRC Press
ISBN: 9814669598
Category : Science
Languages : en
Pages : 528
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Book Description
Today magnetic recording is still the leading technology for mass data storage. Its dominant role is being reinforced by the success of cloud computing, which requires storing and managing huge amounts of data on a multitude of servers. Nonetheless, the hard-disk storage industry is presently at a crossroads as the current magnetic recording techno
Author: M.L. Plumer
Publisher: Springer Science & Business Media
ISBN: 364256657X
Category : Science
Languages : en
Pages : 364
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Book Description
Application-oriented book on magnetic recording, focussing on the underlying physical mechanisms that play crucial roles in medium and transducer development for high areal density disk drives.
Author:
Publisher:
ISBN:
Category : Electrical engineering
Languages : en
Pages : 2240
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Book Description
Author: Manish Kapoor
Publisher:
ISBN:
Category :
Languages : en
Pages : 218
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Book Description
Author: Hao Zheng
Publisher:
ISBN: 9781267070210
Category :
Languages : en
Pages : 230
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Book Description
Many advanced technologies in the field of magnetic disk recording are being studied in order to achieve areal densities in excess of 1.6 gigabits per square millimeter (1 terabits per square inch). Bit patterned media (BPM) is one of these promising technologies. By using disks with physically separated magnetic patterns instead of conventional continuous media, bit patterned media avoid magnetic interference between adjacent bits and improve the thermal stability of the media. Currently, thermal flying height control (TFC) sliders are commonly used to compensate thermal effects during reading and writing and to maintain a stable and ultra-low head/disk spacing during drive operation. Heat assisted magnetic recording (HAMR) has been introduced in order to address difficulties in writing of information on magnetic media with high coercivity. By using a laser beam to locally heat the media above its Curie temperature, the magnetic material momentarily reduces its coercivity and permits writing of information on the disk. However, the method raises concerns about the stability of the lubricants on the disk. In this dissertation, we focus on the investigation of the head/disk interface for bit patterned media, the design of thermal flying height control sliders, and the implementation of heat assisted magnetic recording. In particular, we use a finite-element-based air bearing simulator to study the steady-state flying characteristics of sliders flying over bit patterned media. This air bearing simulator is then combined with a thermo-mechanical model of a slider in order to analyze thermal flying height control sliders featuring dual heater/insulator elements. Next, a finite element model of a thermal flying height control slider with an integrated heat assisted magnetic recording optical system is developed to study the effect of heat dissipation along the laser delivery path on the performance of the HAMR-TFC slider. The design parameters of the dual thermal flying height control heaters are optimized in order to minimize the dependence of the head/disk spacing on laser induced thermal effects. Finally, experimental techniques are developed to investigate the photo-thermo stability and tribological properties of HAMR-type lubricants which are designed to be resistant to the high temperatures experienced under laser exposure.
