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Abstract:

Researchers have paid considerable attention to CaCu 3 Ti 4 O 12 (CCTO) due to the colossal dielectric constant over a wide range of frequency and temperature. Despite of the growing number of works dealing with CCTO, there have been few studies of the role played by the substrate in inducing structural and dielectric effects of this material. In this work, highly-oriented CCTO thin films have been deposited on LaAlO 3 (100), NdGaO 3 (100) and NdGaO 3 (110) substrates using a sol-gel method. These single crystal substrates were chosen in terms of small lattice mismatch between CCTO and the substrate. The X-ray diffraction patterns showed that the CCTO film layers grow with different orientations depending upon the substrate used. We show that the preferred orientation of CCTO thin films can be manipulated to a high degree by growing it on specific crystal planes of the substrates without the use of buffer layers. Colossal dielectric constants are observed in our films which appear to correlate with the film crystallinity and preferred orientation. © 2016 Elsevier B.V.

Registro:

Documento: Artículo
Título:Controlling the preferential orientation in sol-gel prepared CaCu 3 Ti 4 O 12 thin films by LaAlO 3 and NdGaO 3 substrates
Autor:Pongpaiboonkul, S.; Kasa, Y.; Phokharatkul, D.; Putasaeng, B.; Hodak, J.H.; Wisitsoraat, A.; Hodak, S.K.
Filiación:Nanoscience and Nanotechnology Program, Center of Innovative Nanotechnology, Chulalongkorn University, Bangkok, 10330, Thailand
Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
Nanoelectronics and MEMS Laboratory, Pathumthani, 12120, Thailand
National Metal and Materials Technology Center (MTEC), Thailand Science Park, Pathumthani, 12120, Thailand
DQIAyQF FCEN Universidad de Buenos Aires/INQUIMAE-CONICET, Cdad, Univ. Pab II, CABA, Buenos Aires, 1428, Argentina
Palabras clave:Colossal dielectric constant and sol-gel; Highly-oriented CaCu 3 Ti 4 O 12 films; LaAlO 3 substrate; NdGaO 3 substrate; Aluminum compounds; Calcium compounds; Copper compounds; Crystal orientation; Film growth; Gallium compounds; Lanthanum compounds; Lattice mismatch; Neodymium compounds; Single crystals; Sol-gel process; Sol-gels; Substrates; Titanium compounds; X ray diffraction; CaCu3Ti4O12; Colossal dielectric constant; Dielectric effects; Film crystallinity; NdGaO3 substrates; Preferential orientation; Preferred orientations; Single crystal substrates; Thin films
Año:2016
Volumen:385
Página de inicio:324
Página de fin:332
DOI: http://dx.doi.org/10.1016/j.apsusc.2016.05.101
Título revista:Applied Surface Science
Título revista abreviado:Appl Surf Sci
ISSN:01694332
CODEN:ASUSE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01694332_v385_n_p324_Pongpaiboonkul

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Citas:

---------- APA ----------
Pongpaiboonkul, S., Kasa, Y., Phokharatkul, D., Putasaeng, B., Hodak, J.H., Wisitsoraat, A. & Hodak, S.K. (2016) . Controlling the preferential orientation in sol-gel prepared CaCu 3 Ti 4 O 12 thin films by LaAlO 3 and NdGaO 3 substrates. Applied Surface Science, 385, 324-332.
http://dx.doi.org/10.1016/j.apsusc.2016.05.101
---------- CHICAGO ----------
Pongpaiboonkul, S., Kasa, Y., Phokharatkul, D., Putasaeng, B., Hodak, J.H., Wisitsoraat, A., et al. "Controlling the preferential orientation in sol-gel prepared CaCu 3 Ti 4 O 12 thin films by LaAlO 3 and NdGaO 3 substrates" . Applied Surface Science 385 (2016) : 324-332.
http://dx.doi.org/10.1016/j.apsusc.2016.05.101
---------- MLA ----------
Pongpaiboonkul, S., Kasa, Y., Phokharatkul, D., Putasaeng, B., Hodak, J.H., Wisitsoraat, A., et al. "Controlling the preferential orientation in sol-gel prepared CaCu 3 Ti 4 O 12 thin films by LaAlO 3 and NdGaO 3 substrates" . Applied Surface Science, vol. 385, 2016, pp. 324-332.
http://dx.doi.org/10.1016/j.apsusc.2016.05.101
---------- VANCOUVER ----------
Pongpaiboonkul, S., Kasa, Y., Phokharatkul, D., Putasaeng, B., Hodak, J.H., Wisitsoraat, A., et al. Controlling the preferential orientation in sol-gel prepared CaCu 3 Ti 4 O 12 thin films by LaAlO 3 and NdGaO 3 substrates. Appl Surf Sci. 2016;385:324-332.
http://dx.doi.org/10.1016/j.apsusc.2016.05.101