Microstructure and texture evolution of Cr thin films with thickness
作者:
Li Tang,
Gareth Thomas,
期刊:
Journal of Applied Physics
(AIP Available online 1993)
卷期:
Volume 74,
issue 8
页码: 5025-5032
ISSN:0021-8979
年代: 1993
DOI:10.1063/1.354283
出版商: AIP
数据来源: AIP
摘要:
Microstructure and texture of Cr thin films sputter deposited on NiP‐coated AlMg substrates were studied using transmission electron microscopy (TEM). The sample tilt method in TEM has proven to be very effective in determining the fiber axis of weakly textured films. It was found that both the grain size and texture of the Cr films are strongly dependent on their thickness and deposition conditions. For Cr films deposited on 300 °C preheated substrates, the grain size increases monotonically with the film thickness. The texture changes from no texture (∼100 A˚) to a [001] fiber texture (200–2000 A˚), and then to a [011] fiber texture (∼5000 A˚). A 2000‐A˚‐thick film deposited on a room‐temperature substrate shows a strong [011] texture and a smaller grain size than that of a film with the same thickness but deposited on a preheated substrate. Correlations between the in‐plane coercivity of Co‐based alloy thin films for longitudinal magnetic recording and the grain size and texture of Cr underlayers are also discussed.
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