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Produktbild: Non-Volatile Memories

Non-Volatile Memories

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Beschreibung

Written for scientists, researchers, and engineers, Non-volatile Memories describes the recent research and implementations in relation to the design of a new generation of non-volatile electronic memories. The objective is to replace existing memories (DRAM, SRAM, EEPROM, Flash, etc.) with a universal...

Beschreibung

Written for scientists, researchers, and engineers, Non-volatile Memories describes the recent research and implementations in relation to the design of a new generation of non-volatile electronic memories. The objective is to replace existing memories (DRAM, SRAM, EEPROM, Flash, etc.) with a universal memory model likely to reach better performances than the current types of memory: extremely high commutation speeds, high implantation densities and retention time of information of about ten years.

Produktdetails

Einband

Gebundene Ausgabe
Erscheinungsdatum

06.04.2015
Verlag John Wiley & Sons Inc
Seitenzahl

304

Produktdetails

Einband

Gebundene Ausgabe
Erscheinungsdatum

06.04.2015
Verlag John Wiley & Sons Inc
Seitenzahl

304
Maße (L/B/H)

24/16,1/2,1 cm
Gewicht

624 g
Auflage

1. Auflage
Sprache

Englisch
ISBN

978-1-84821-623-5
Herstelleradresse

Libri GmbH
Europaallee 1
36244 Bad Hersfeld
DE

Email: gpsr@libri.de

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  • Produktbild: Non-Volatile Memories
  • ACKNOWLEDGEMENTS xi
     
    PREFACE xiii
     
    PART 1. INFORMATION STORAGE AND THE STATE OF THE ART OF ELECTRONIC MEMORIES 1
     
    CHAPTER 1. GENERAL ISSUES RELATED TO DATA STORAGE AND ANALYSIS CLASSIFICATION OF MEMORIES AND RELATED PERSPECTIVES 3
     
    1.1. Issues arising from the flow of digital information 3
     
    1.2. Current electronic memories and their classification 5
     
    1.3. Memories of the future 8
     
    CHAPTER 2. STATE OF THE ART OF DRAM, SRAM, FLASH, HDD AND MRAM ELECTRONIC MEMORIES 13
     
    2.1. DRAM volatile memories 13
     
    2.1.1. The operating principle of a MOSFET (metal oxide semiconductor field effect transistor) 14
     
    2.1.2. Operating characteristics of DRAM memories 17
     
    2.2. SRAM memories 19
     
    2.3. Non-volatile memories related to CMOS technology 22
     
    2.3.1. Operational characteristics of a floating gate MOSFET 22
     
    2.3.2. Flash memories 38
     
    2.4. Non-volatile magnetic memories (hard disk drives - HDDs and MRAMs) 45
     
    2.4.1. The discovery of giant magneto resistance at the origin of the spread of hard disk drives 46
     
    2.4.2. Spin valves 49
     
    2.4.3. Magnetic tunnel junctions 51
     
    2.4.4. Operational characteristics of a hard disk drive (HDD) 51
     
    2.4.5. Characteristics of a magnetic random access memory (MRAM) 54
     
    2.5. Conclusion 56
     
    CHAPTER 3. EVOLUTION OF SSD TOWARD FERAM, FEFET, CTM AND STT-RAM MEMORIES 59
     
    3.1. Evolution of DRAMs toward ferroelectric FeRAMs 60
     
    3.1.1. Characteristics of a ferroelectric material 60
     
    3.1.2. Principle of an FeRAM memory 63
     
    3.1.3. Characteristics of an FeFET memory 67
     
    3.2. The evolution of Flash memories towards charge trap memories (CTM) 77
     
    3.3. The evolution of magnetic memories (MRAM) toward spin torque transfer memories (STT-RAM) 82
     
    3.3.1. Nanomagnetism and experimental implications 83
     
    3.3.2. Characteristics of spin torque transfer 84
     
    3.3.3. Recent evolution with use of perpendicular magnetic anisotropic materials 88
     
    3.4. Conclusions 90
     
    PART 2. THE EMERGENCE OF NEW CONCEPTS: THE INORGANIC NEMS, PCRAM, RERAM AND ORGANIC MEMORIES 93
     
    CHAPTER 4. VOLATILE AND NON-VOLATILE MEMORIES BASED ON NEMS 95
     
    4.1. Nanoelectromechanical switches with two electrodes 96
     
    4.1.1. NEMS with cantilevers 97
     
    4.1.2. NEMS with suspended bridge 102
     
    4.1.3. Crossed carbon nanotube networks 103
     
    4.2. NEMS switches with three electrodes 106
     
    4.2.1. Cantilever switch elaborated by lithographic techniques 107
     
    4.2.2. Nanoswitches with carbon nanotubes 110
     
    4.2.3. NEMS-FET hybrid memories with a mobile floating gate or mobile cantilever 116
     
    4.4. Conclusion 121
     
    CHAPTER 5. NON-VOLATILE PHASE-CHANGE ELECTRONIC MEMORIES (PCRAM) 123
     
    5.1. Operation of an electronic phase-change memory 125
     
    5.1.1. Composition and functioning of a GST PCRAM 125
     
    5.1.2. The antinomy between the high resistance of the amorphous state and rapid heating 129
     
    5.2. Comparison of physicochemical characteristics of a few phase-change materials 134
     
    5.3. Key factors for optimized performances of PCM memories 137
     
    5.3.1. Influence of cell geometry on the current Im needed for crystal melting 138
     
    5.3.2. Optimization of phase-change alloy composition to improve performance 143
     
    5.3.3. Influence of nanostructuration of the phase-change material 148
     
    5.3.4. Recent techniques for improvement of amorphization and crystallization rates of phase-change materials 156
     
    5.3.5. Problems related to interconnection of PCRAM cells in a 3D crossbar-type arc