Schedule for this course

Most companies pushing Areal Density beyond 100 Gbpi are already designing with Perpendicular recording. This class is ideal for those who want to understand the advantages, pitfalls, and implementation of Perpendicular Recording. This class will take you through the most recent major recording advances, including TGMR heads. We will briefly go through reader technology evolution then move into Perpendicular Recording. This will lead us to Perpendicular Write Heads, Superparamagnetism and why Perpendicular Recording is the way out of this issue, which is currently limiting Longitudinal Recording performance. We will delve into details of Perpendicular media and point out the pitfalls of Perpendicular Recording. Head and Media Development and Manufacturing issues will be discussed in detail and we will finish with a host of issues that drives have with Perpendicular heads and media. A highlight of this class is the practical aspects of integrating Perpendicular components in drives.
 

Introduction Big Technology Changes    in past five years Glass Media Ramp Load Dual Stage Actuators Writer Heaters TGMR Readers SAF Media Perpendicular Writers Perpendicular Media Stiction Free AAB's Reader Technology Reader Evolution Transfer Curves Asymmetry Domain Walls Exchange Coupling Other Domain Effects Stabilization Magnetostriction Top Spin Valves SAF Spin Valves TGMR Head Tunneling Perpendicular Recording Perpendicular Recording    Basics Transitions Fields Hysteresis Loops Writing Transitions Sensing Data Demag in Transitions Media Grains and     Grain Size Grain Anisotropy Easy/Hard Axis Loops Write Heads Increasing Head Fields Head Domains Field to Write More Out of the Head Skin Depth Laminated Poles Smaller HMS Perpendicular Write Heads Why Perpendicular Now? Head Cross Section Perpendicular Electric    Testing Spin Stand Requirements OVW Testing PW50 vs. TW50 Channel Density Background Erase Sectored Testing Amplitude Asymmetry Write SAT Testing

Superparamagnetism Anisotropy Anisotropy Energy Diagrams Critical Field Energy Barrier Thermal Effects Decay Time Barrier Ratio Postponing SPM SAF Media Coercivity Effects Stronger Writers Probe Head Details Increasing Media Field Head Coordinates Probe Heads SUL Details Coil Placement Throat Height Gap Length Effects Pole Trimming Main Pole Length Effects Skew Effects SUL's Charges and Imaging SUL Imaging Head Imaging Media Demag Demag in SUL's SUL Properties SUL Materials Permeability SUL Stray Field Sensitivity SUL Thickness Effects Stray Field Fixes SUL Noise SUL Domains General Recording System Issues Erase after Write Laminated MP's Skew Effects Mag Layer Imaging    Effects Side Track Erasure Frequency Dependent    Side Track Erasure Adjacent Track Interference Cross Track Fields Other Remanent Effects Baseline Shift SUL Charge Effects Transition Issues NLTS, NIBS

Media Requirements M-H Loops Mrt Requirements Mag Layer Materials Media DOE's SNR Tree Media Structures SUL Materials SFD Effects Hk Requirements Hn Requirements Ideal Media Media Dev. & Mfg. Issues The Perfect Media Thermal Management Media Noise Magnetic Variations Track Width & Grain Size Grain Size Evolution Media Measuremnts-Dev.    & Production Media Certification Servo Track Writing Head Design & Mfg. Issues More SNR Head Stability and    Examples Critical Reader Issues Junction Characteristics Stray Field Sensitivity Barrier Thickness Drive Issues-Heads/Media Drive Issues & Dilemas Drive Development Challenges Testing Issues Track Encroachment Physical vs. Magnetic Head Widths Vbar Drive Adaptations Drive Stability Drive HDI Management Pushing Areal Density Where Do AD Increases Come From Drive BER vs. ECC Levels Upstream Testing Rapid AD Growth Challenges Up the Component Drive BER vs. ECC Levels   BER/OTC-EFL Curve Design Improvements Development Budgets Development Cycle Length DPPM Appendix Governing Equations Acronyms

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