Magnetic Information Storage Technology (eBook)

A Volume in the ELECTROMAGNETISM Series

Alex M. Taratorin, Shan X. Wang (Autoren)

eBook Download: PDF

1999 | 1. Auflage
536 Seiten
Elsevier Science (Verlag)
978-0-08-051061-3 (ISBN)

Infos

This text explains how hard disk drives operate, how billions of bytes of digital information are stored and accessed, and where the technology is going. In particular, the book emphasizes the most fundamental principles of magnetic information storage, including in-depth knowledge of both magnetics and signal processing methods. Magnetic Information Storage Technology contains many graphic illustrations and an introduction of alternative storage technologies, such as optic disk recording, holographic recording, semiconductor flash memory, and magnetic random access memory.


* Provides the fundamentals of magnetic information storage and contrasts it with a comparison of alternative storage technologies
* Addresses the subject at the materials, device and system levels
* Addresses the needs of the multi-billion-dollar-a year magnetic recording and information storage industry
* Emphasizes both theoretical and experimental concepts
* Condenses current knowledge on magnetic information storage technology into one self-contained volume
* Suitable for undergraduate and graduate students, as well as seasoned researchers, engineers and professionals in data and information storage fields

Inhalt

Front Cover 1
Magnetic Infrmation Storage Technology 4
Copyright Page 5
Contents 10
Foreword 16
Preface 18
List of Acronyms 22
List of Symbols 25
Chapter 1. Introduction 34
1.1 Overview of Digital Magnetic Information Storage 34
1.2 Review of Basic Magnetics 45
Chapter 2. Fundamentals of Inductive Recording Head and Magnetic Medium 64
2.1 Fourier Transforms of Magnetic Fields in Free Space 64
2.2 Inductive Recording Heads 68
2.3 Magnetic Recording Medium 75
Chapter 3. Read Process in Magnetic Recording 82
3.1 Reciprocity Principle 82
3.2 Readback from Single Transition 85
3.3 Readback from Multiple Transitions 89
Chapter 4. Write Process in Magnetic Recording 98
4.1 Models of Write Process 98
4.2 Nonlinearities in Write Process 109
Chapter 5. Inductive Magnetic Heads 114
5.1 Modeling of Inductive Heads 115
5.2 Fabrication of Thin-Film Inductive Heads 123
5.3 Inductive Head as Reader 132
5.4 Inductive Head as Writer 136
5.5 Side Read, Side Write, and Side Erase 143
5.6 High-Saturation Inductive Head Materials 147
Chapter 6. Magnetoresistive Heads 156
6.1 Anisotropic Magnetoresistive (AMR) Effect 156
6.2 Magnetoresistive Read Head and Bias Schemes 158
6.3 Magnetoresistive Head Readback Analysis 171
6.4 Practical Aspects of Magnetoresistive Heads 183
6.5 Fabrication of MR Heads 192
6.6 Giant Magnetoresistive (GMR) Heads 196
Chapter 7. Magnetic Recording Media 210
7.1 Magnetic Medium Requirements 211
7.2 Particulate Media 212
7.3 Thin-Film Media 213
7.4 Keepered Media 225
7.5 Patterned Media 231
Chapter 8. Channel Coding and Error Correction 240
8.1 Encoding for Magnetic Recording Channels 240
8.2 Channel Bit Representation by NRZ and NRZI Data 242
8.3 Run-length-limited (RLL) Codes 245
8.4 User Data Rate, Channel Data Rate, and Flux Frequency 248
8.5 Principles of Error Detection and Correction 250
Chapter 9. Noises 266
9.1 Noise Formulation 267
9.2 Medium Noise Mechanisms 274
9.3 Head and Electronics Noises 289
9.4 SNR Considerations for Magnetic Recording 290
9.5 Experimental Measurements of SNR 293
Chapter 10. Nonlinear Distortions 300
10.1 Hard Transition Shift and Overwrite 300
10.2 Nonlinear Transition Shift (NLTS) 320
10.3 Measurement of Nonlinear Transition Shift 347
10.4 Partial Erasure 364
10.5 Magnetoresistive Read Head Nonlinearity 368
Chapter 11. Peak Detection Channel 378
11.1 Peak Detection Channel Model 378
11.2 BER at the Threshold Detector 380
11.3 BER at the Zero-Crossing Detector 382
11.4 Window Margin and Bit-Shift Distribution 386
Chapter 12. PRML Channels 394
12.1 Principle of Partial Response and Maximum Likelihood 394
12.2 Partial Response 402
12.3 Clock and Gain Recovery 421
12.4 Maximum Likelihood Detection 426
12.5 PRML Error Margin Analysis 448
12.6 Performance of PRML Channels 454
Chapter 13. Decision Feedback Channels 466
13.1 Principle of Decision Feedback 466
13.2 Fixed-Depth Tree Search with Decision Feedback and (1,7) Code 470
13.3 Equalization for MDFE Channel 475
13.4 Error Rate of MDFE Channel and Error Propagation 477
13.5 Timing and Gain Recovery in MDFE Channel 480
Chapter 14. Off-Track Performance 484
14.1 Structure of Magnetic Track 484
14.2 Track Misregistration and Off-Track Performance 486
14.3 Off-Track Capability and 747 Curve 489
Chapter 15. Head-Disk Assembly Servo 500
15.1 Head Servomechanism 500
15.2 Sector Servo Disk Format 502
15.3 Position Error Signal 505
Chapter 16. Fundamental Limitations of Magnetic Recording 512
16.1 Superparamagnetism and Time-Dependent Coercivity 513
16.2 Dynamic Effects: Medium, Head, and Electronics 521
Chapter 17. Alternative Information Storage Technologies 528
17.1 Optical Disk Recording 528
17.2 Holographic Recording 549
17.3 Flash Memory 555
17.4 Magnetic RAM 559
Index 564

Produkt-Details

• Erscheint lt. Verlag: 24.5.1999
• Sprache: englisch
• Themenwelt: Informatik ► Weitere Themen ► Hardware
• Themenwelt: Naturwissenschaften ► Physik / Astronomie ► Festkörperphysik
• Themenwelt: Technik ► Elektrotechnik / Energietechnik
• Themenwelt: Technik ► Maschinenbau
• ISBN-10: 0-08-051061-2 / 0080510612
• ISBN-13: 978-0-08-051061-3 / 9780080510613