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Original Articles

In-situ Raman Spectroscopic Investigation of the Effect of Cooling Speed on Domain Formation in PbTiO3 Films

, , , , , , , & show all
Pages 39-46 | Received 29 Sep 2013, Accepted 11 Mar 2014, Published online: 16 Jun 2014
 

Abstract

The influence of the post-deposition cooling speed on the domain formation process of PbTiO3 films was investigated using MOCVD equipment combined with in-situ Raman spectroscopy. The accumulation and relaxation of strain during the post-deposition cooling process is responsible for the domain structure. The Curie temperature for fast cooling is lower than that for slow cooling. Additionally, the residual strain with fast cooling is smaller than that with slow cooling. These observations suggest that the volume fraction of the c-domain is larger for fast cooling and that the atmospheric conditions during the first post-deposition cooling process may control the domain structure.

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