Threading dislocation generation in epitaxial (Ba,Sr) TiO[sub 3] films grown on (001) LaAlO[sub 3] by pulsed laser deposition

Misirlioglu, I. B.; Vasiliev, A. L.; Aindow, M.; Alpay, S. P.; Ramesh, R.
March 2004
Applied Physics Letters;3/8/2004, Vol. 84 Issue 10, p1742
Academic Journal
Epitaxial Ba[sub 0.6]Sr[sub 0.4]TiO[sub 3] films were grown onto (001) LaAlO[sub 3] by pulsed-laser deposition, and the dislocation structures of the films were investigated using transmission electron microscopy. Misfit dislocations with a periodicity of about 7 nm and Burgers vectors b=a<100> were observed at the interface. A high density of threading dislocations was present the films and these also had b=a<100>. The data indicate that the threading dislocations are not generated as the result of half-loop climb from the deposit surface as proposed previously, but are instead formed when misfit dislocations are forced away from the interface during island coalescence. © 2004 American Institute of Physics.


Related Articles

  • Critical thickness control by deposition rate for epitaxial BaTiO3 thin films grown on SrTiO3(001). Kawai, M.; Kan, D.; Isojima, S.; Kurata, H.; Isoda, S.; Shimakawa, Y.; Kimura, S.; Sakata, O. // Journal of Applied Physics;Dec2007, Vol. 102 Issue 11, p114311 

    BaTiO3/SrTiO3(001) epitaxial thin films were prepared at various growth rates by pulsed laser deposition, and their heterostructures were evaluated by synchrotron x-ray diffraction measurements and cross-sectional scanning transmission electron microscopy observations. In a film grown at a low...

  • Epitaxial thin film growth of Ca2RuO4+δ by pulsed laser deposition. Wang, X.; Xin, Y.; Stampe, P. A.; Kennedy, R. J.; Zheng, J. P. // Applied Physics Letters;12/20/2004, Vol. 85 Issue 25, p6146 

    Epitaxial Ca2RuO4+δ thin films have been grown on (001) LaAlO3 substrate by pulsed laser deposition. X-ray diffraction and transmission electron microscopy studies show that the films are single crystal with good structural quality. The films are determined to have quasitetragonal structure...

  • Comparison of morphology evolution of Ge(001) homoepitaxial films grown by pulsed laser deposition and molecular-beam epitaxy. Byungha Shin; Leonard, John P.; McCamy, James W.; Aziz, Michael J. // Applied Physics Letters;10/31/2005, Vol. 87 Issue 18, p181916 

    Using a dual molecular-beam epitaxy (MBE)–pulsed laser deposition (PLD) ultrahigh vacuum chamber, we have conducted the first experiments under identical thermal, background, and surface preparation conditions to compare Ge(001) homoepitaxial growth morphology in PLD and MBE. We find that...

  • Ferroelectric BaTiO3 thin films on Ni metal tapes using NiO as buffer layer. Yuan, Z.; Liu, J.; Weaver, J.; Chen, C. L.; Jiang, J. C.; Lin, B.; Giurgiutiu, V.; Bhalla, A.; Guo, R. Y. // Applied Physics Letters;5/14/2007, Vol. 90 Issue 20, p202901 

    Ferroelectric BaTiO3 (BTO) thin films were deposited on NiO buffered polycrystalline Ni tapes by pulsed laser deposition. Microstructural studies by x-ray diffractometer and transmission electron microscopy reveal that the as-grown BTO films have the nanopillar structures with an average size of...

  • The influence of lithium excess in the target on the properties and compositions of Li1+ x Mn2O4− δ thin films prepared by PLD. Simmen, F.; Lippert, T.; Novák, P.; Neuenschwander, B.; Döbeli, M.; Mallepell, M.; Wokaun, A. // Applied Physics A: Materials Science & Processing;Nov2008, Vol. 93 Issue 3, p711 

    Li–Mn–O thin films were deposited by pulsed laser deposition (PLD) onto stainless steel substrates using targets containing different concentrations of added Li2O. The influence of the target composition on the stoichiometry of the resulting thin films, the surface morphology and...

  • Quantitative TEM analysis of Al/Cu multilayer systems prepared by pulsed laser deposition. Liu, H. H.; Pryds, N.; Schou, J.; Huang, X. // Applied Physics A: Materials Science & Processing;Dec2010, Vol. 101 Issue 4, p677 

    Thin films composed of alternating Al/Cu/Al layers were deposited on a (111) Si substrate using pulsed laser deposition (PLD). The thicknesses of the film and the individual layers, and the detailed internal structure within the layers were characterized by means of transmission electron...

  • Growth-mode induced defects in epitaxial SrTiO3 thin films grown on single crystal LaAlO3 by a two-step PLD process. Dong Su; Yamada, Tomoaki; Gysel, Roman; Tagantsev, Alexander K.; Muralt, Paul; Setter, Nava; Nan Jiang // Journal of Materials Research;3/28/2011, Vol. 26 Issue 6, p770 

    We grew epitaxial SrTiO3 (STO) thin films on (001) LaAlO3 substrates via a two-step procedure using pulsed laser deposition and studied them with transmission electron microscopy in plane-view and cross-sectional samples. We found that partial misfit dislocations are the main interfacial...

  • Epitaxial, cation-ordered, ferroelectric PbSc0.5Ta0.5O3 thin films prepared by pulsed laser deposition. Chopra, Anuj; Birajdar, Balaji I.; Yunseok Kim; Vrejoiu, Ionela; Alexe, Marin; Hesse, Dietrich // Applied Physics Letters;7/13/2009, Vol. 95 Issue 2, p022907 

    We report on growth and ferroelectric properties of cation-ordered, epitaxial PbSc0.5Ta0.5O3 (100) films. Single phase epitaxial films were grown on vicinal SrTiO3 (100) substrates with a layer of SrRuO3 as bottom electrode by pulsed laser deposition. Their crystal orientation, topography, and...

  • Pulsed laser deposited epitaxial Sm–Co thin films with uniaxial magnetic texture. Singh, A.; Neu, V.; Tamm, R.; Rao, K.; Faehler, S.; Skrotzki, W.; Schultz, L.; Holzapfel, B. // Journal of Applied Physics;4/15/2006, Vol. 99 Issue 8, p08E917 

    Sm–Co thin films have been grown epitaxially with pulsed laser deposition on Cr buffered MgO(110) substrates. The buffer microstructure plays a significant role in controlling the growth and hence the magnetic properties of the Sm–Co film. High deposition temperatures of the Cr...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics