Banys, J. and Ivanov, M. and Macutkevic, J. and Krotkus, A. and Fan, H. J. and Kawasaki, S. and Scott, J. F. (2009) THz Emission from PZT - Nanotubes. Ferroelectrics, 378 (1). p. 79. ISSN 1563-5112 (electronic) 0015-0193 (paper) DOI 10.1080/00150190902845152Full text not available from this repository.
We report THz emission from lead zirconate-titanate (PZT) nanotube arrays, which is totally absent in flat films or bulk PZT; hence the effect is due to the nano-scale geometry of the tubes, which are 1 μ m in total diameter, 40 nm in wall thickness and standing normal to the Si substrates. The THz radiation is emitted within 0.2 ps and the spectrum exhibits a broad peak from 2 to 8 THz due to the abnormally large carrier concentration gradient and large piezoelectric coefficient in PZT; the inferred mechanism is optical rectification within a surface accumulation layer, rather than the Dember effect.
|Uncontrolled Keywords:||08AREP; IA57;|
|Subjects:||03 - Mineral Sciences|
|Divisions:||03 - Mineral Sciences|
|Journal or Publication Title:||Ferroelectrics|
|Page Range:||p. 79|
|Depositing User:||Sarah Humbert|
|Date Deposited:||04 Jun 2009 12:34|
|Last Modified:||23 Jul 2013 09:55|
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