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Design and Load/Unload Performance of Hard Disk Drive Suspension Integrated With Shape Memory Alloy Thin Film

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3 Author(s)
Soo-Cheol Lim ; Center for Inf. Storage Device, Yonsei Univ., Seoul ; Young-Pil Park ; Park, No-Cheol

We propose a new load/unload (L/UL) suspension featuring shape memory alloy (SMA) thin film and demonstrate its effectiveness through the L/UL simulation. We estimated the mechanical properties of the SMA with respect to the material phases by experiment and designed the proposed suspension by considering the vibration modes related to the L/UL performance. In order to effectively verify the effectiveness of the proposed suspension, we designed the suspension to have similar L/UL performance to that obtained from the conventional suspension when the SMA film is not activated. After analyzing the L/UL design parameters of the proposed suspension when the SMA is activated, we examine the relative performance of the conventional and proposed suspensions by L/UL simulation by comparing the vibration motions of the slider and the minimum gap size between the disk and slider

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Magnetics, IEEE Transactions on  (Volume:43 ,  Issue: 5 )