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タイトル: Initial growth and texture formation during reactive magnetron sputtering of TiN on Si(111).
著者: Li, Tu-Qiang
Noda, Suguru
Tsuji, Yoshiko
Ohsawa, Toshio
Komiyama, Hiroshi
著者(別言語): 野田, 優
辻, 佳子
大沢, 利男
小宮山, 宏
発行日: 2002年5月
出版者: American Institute of Physics
掲載誌情報: Journal of Vacuum Science & Technology A, 20 (3). pp. 583-588
抄録: The initial growth and texture formation mechanism of titanium nitride (TiN) films were investigated by depositing TiN films on (111) silicon substrates by using reactive magnetron sputtering of a Ti metallic target under a N2/Ar atmosphere, and then analyzing the films in detail by using transmission electron microscopy (TEM) and x-ray diffraction (XRD). Two power sources for the sputtering, dc and rf, were compared. At the initial growth stage, a continuous amorphous film containing randomly oriented nuclei was observed when the film thickness was about 3 nm. The nuclei grew and formed a polycrystalline layer when the film thickness was about 6 nm. As the film grew further, its orientation changed depending on the deposition conditions. For dc sputtering, the appearance of (111) or (200)-preferred orientations depended on the N2 partial pressure, and the intensity of the preferred orientation increased with increasing film thickness. For rf sputtering, however, when the film thickness was small (for instance, about 20 nm), the film showed (200) orientation, independent of the N2 partial pressure, and further growth caused the film to orient to the (111) orientation when the N2 partial pressure was low (about 0.015 Pa). The results indicated that preferred orientation of TiN films is controlled by a competition between kinetic and thermodynamic effects.
URI: http://hdl.handle.net/2261/19
ISSN: 07342101
出現カテゴリ:1133810 学術雑誌論文
014 自然科学

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