熱アシスト磁気記録におけるヘッドスメア発生の湿度依存性

抄録

Head smear on slider surface by the laser heating is a big issue in the heat-assisted magnetic recording. In our previous study, we investigated the hydrocarbon with high molecular weight such as alkens or alkanes generated from a DLC film heated to 350-400 °C. Our previous results suggested that the hydrocarbons decomposed from DLC film polymerized in the thermal plasma between the head and disk surfaces. In this study, we focused on the dependence of humidity for head smear generation, because the water molecules might affect the polymerization of the hydrocarbon smear. As the result, we confirmed the humidity in environment affected the smear amount of hydrocarbons.