کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5369242 | 1388425 | 2006 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Correlation between structural and mechanical properties of PbTiO3 thin films grown by pulsed-laser deposition Correlation between structural and mechanical properties of PbTiO3 thin films grown by pulsed-laser deposition](/preview/png/5369242.png)
Tetragonal lead titanate (PbTiO3, PT) thin films are grown on (1Â 0Â 0) MgO substrate by pulsed-laser deposition (PLD) for expected applications in integrated optics. The realisation of outstanding and reliable devices into integrated circuits requires sufficient mechanical resistance despite that the obtained PT films display interesting waveguiding properties associated with low optical losses. Two mechanical properties characteristic of elasticity and hardness of PT films are studied. The elastic modulus (E or Young's modulus) and the hardness (H) are measured by the nanoindentation technique. These mechanical properties are correlated to the crystalline quality of PT/MgO thin films. The films show epitaxial relationship with the MgO substrate and the orientation of crystallites perpendicularly to the surface substrate may be the consequence of a growth process along c-axis, a-axis or both. Differences on curves plotting hardness and elastic modulus as a function of indentation depth are observed as the curves are less dispersed for the films mainly c-axis oriented.
Journal: Applied Surface Science - Volume 252, Issue 13, 30 April 2006, Pages 4558-4563