THz Emission from PZT - Nanotubes

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 10.1080/00150190902845152

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Abstract

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.

Item Type:	Article
Uncontrolled Keywords:	08AREP; IA57;
Subjects:	03 - Mineral Sciences
Divisions:	03 - Mineral Sciences
Journal or Publication Title:	Ferroelectrics
Volume:	378
Page Range:	p. 79
Identification Number:	10.1080/00150190902845152
Depositing User:	Sarah Humbert
Date Deposited:	04 Jun 2009 12:34
Last Modified:	23 Jul 2013 09:55
URI:	http://eprints.esc.cam.ac.uk/id/eprint/1069

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