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There are higher technical requirements for protecting layer of magnetic heads and disks used in future high-density storage fields. In this paper, ultra-thin (2nm thickness) tetrahedral amorphous carbon (ta-C) films were firstly prepared by filtered cathodic vacuum arc (FCVA) method, then a series of nitriding treatments were performed with nitrogen plasma generated using electron cyclotron resonance...
In this paper, monochromatic double‐crystal X‐ray diffraction and white‐beam X‐ray topography techniques using synchrotron radiation source were utilized to investigate the growth process of large sapphire crystal by an improved Kyropoulos‐like method. Compared with the calculated theoretical value of 8.6 s, FWHM experimental values of sapphire are in the range of 11 ∼ 26 s, showing its good crystalline...
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