Effect of heat source sliding contact on the CoPtCr-based magnetic recording disk was investigated.A tribo-test of the disk with low load heat source and the scan of disk with magnetic head were sequentially carried o...Effect of heat source sliding contact on the CoPtCr-based magnetic recording disk was investigated.A tribo-test of the disk with low load heat source and the scan of disk with magnetic head were sequentially carried out.Then disk samples in the contact area were observed by atomic force microscopy(AFM)and magnetic force microscopy(MFM).A finite element model using thermomechanical coupling was developed to calculate the mechanical and thermal response of the disk under heat source sliding contact based on the experimental results.It was found that data loss load under sliding contact with a heat source was far less than that without a heat source,and mechanical scratches and demagnetization did not occur in the data loss area under the experimental conditions.The finite element analysis(FEA)results indicate that the thin surface DLC coating has more significant effect on the mechanical response than the thermal response of the magnetic layer.展开更多
基金NSFC(90923027 and 51050110137)The Fundamental Research Funds for Central Universitie
文摘Effect of heat source sliding contact on the CoPtCr-based magnetic recording disk was investigated.A tribo-test of the disk with low load heat source and the scan of disk with magnetic head were sequentially carried out.Then disk samples in the contact area were observed by atomic force microscopy(AFM)and magnetic force microscopy(MFM).A finite element model using thermomechanical coupling was developed to calculate the mechanical and thermal response of the disk under heat source sliding contact based on the experimental results.It was found that data loss load under sliding contact with a heat source was far less than that without a heat source,and mechanical scratches and demagnetization did not occur in the data loss area under the experimental conditions.The finite element analysis(FEA)results indicate that the thin surface DLC coating has more significant effect on the mechanical response than the thermal response of the magnetic layer.
