A dual stage slider–suspension design for nanospaced recording

Abstract

Thermal pole tip protrusion finite element analysis of thin film inductive recording headsThis article presents a novel design of dual stage slider suspension for 5-8 nm spaced recording. The primary slider-suspension design is the same as what has been used in the current hard disk drives. However, slider's ABS is redesigned with two side channels and a V-shaped deflector to prevent airborne particles from entering the interface between read/write pad and disk surface. The secondary slider suspension is a W-shaped microstructure fabricated by semiconductor technology. Details of computer simulation and evaluations of the new design were conducted and are reported, including a flying performance study of the primary slider design, a particle trajectory study, suspension structure analysis, and the mechanical durability estimation of the read/write pad.

Finite element modeling and simulation of hard disk slider with in-situ flying height measurement capability

“…where Ci,C2, di and d 2 are constants. The constants can be determined by substituting the boundary conditions given by Equation (2-10) into Equation (2)(3)(4)(5)(6)(7)(8)(9)(10)(11). This yields…”

“…Integrating equation (3 We define 3 dP (e) F,=N\ e) {QP (e) H (e) -A/ W fl (e) )| ( . dX lL (3)(4)(5)(6)(7)(8)(9)(10)(11)(12) From equation (3-9), we have Substitute (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19) and (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) into (3-18), we get…”

“…Traditionally, the flying height is measured experimentally in design stage. For the past several decades, many methods have been developed for measuring flying height [4][5][6][7][8][9][10][11][12][13][14][15][16][17].…”

“…Virtual Testine ofln-Situ Mechanical Impedance Measurement Capability of New Slider Design matrix are shown as Equation(5)(6)(7)(8)(9)(10)(11) to(5)(6)(7)(8)(9)(10)(11)(12)(13)(14) respectively. Units for Tn, T12, T 2 i, T22 are…”