TITLE

Microstructure and dielectric properties of Ba[sub 1-x]Sr[sub x]TiO[sub 3] films grown on LaAlO[sub 3] substrates

AUTHOR(S)
Gim, Y.; Hudson, T.; Fan, Y.; Kwon, C.; Findikoglu, A. T.; Findikoglu, A.T.; Gibbons, B. J.; Gibbons, B.J.; Park, B. H.; Park, B.H.; Jia, Q. X.; Jia, Q.X.
PUB. DATE
August 2000
SOURCE
Applied Physics Letters;8/21/2000, Vol. 77 Issue 8
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report a systematic study of the microstructure and dielectric properties of barium strontium titanate, Ba[sub 1-x]Sr[sub x]TiO[sub 3], films grown by laser ablation on LaAlO[sub 3] substrates, where x=0.1-0.9 at an interval of 0.1. X-ray diffraction analysis shows that when x<0.4, the longest unit-cell axis is parallel to the plane of the substrate but perpendicular as x approaches 1. Dielectric constant versus temperature measurements show that the relative dielectric constant has a maximum value and that the peak temperatures corresponding to the maximum relative dielectric constant are about 70 °C higher when x≤0.4 but similar when x>0.4, compared with the peak temperatures of the bulk Ba[sub 1-x]Sr[sub x]TiO[sub 3]. At room temperature, the dielectric constant and tunability are relatively high when x≤0.4 but start to decrease rapidly as x increases. © 2000 American Institute of Physics.
ACCESSION #
4414480

 

Related Articles

  • Dielectric properties in heteroepitaxial Ba[sub 0.6]Sr[sub 0.4]TiO[sub 3] thin films: Effect of internal stresses and dislocation-type defects. Canedy, C. L.; Canedy, C.L.; Li, Hao; Hao Li; Alpay, S. P.; Alpay, S.P.; Salamanca-Riba, L.; Roytburd, A. L.; Roytburd, A.L.; Ramesh, R. // Applied Physics Letters;9/11/2000, Vol. 77 Issue 11 

    A series of heteroepitaxial Ba[sub 0.6]Sr[sub 0.4]TiO[sub 3] were grown on 0.29(LaAlO[sub 3]):0.35(Sr[sub 2]TaAlO[sub 6]) substrates using pulsed-laser deposition. X-ray characterization revealed compressive in-plane stresses in the thinnest films, which were relaxed in a continuous fashion with...

  • The effect of stress on the dielectric and tunable properties of barium stannate titanate thin films. Sannian Song; Jiwei Zhai; Lina Gao; Xi Yao // Applied Physics Letters;2/2/2009, Vol. 94 Issue 5, pN.PAG 

    Ba(Sn0.15Ti0.85)O3 thin films were grown on the LaNiO3 buffered LaAlO3, SrTiO3, MgO, and Al2O3 single crystal substrates, respectively. These substrates provide a systematic change in the stress while maintaining the same film microstructure. The stress in the thin film induces an obvious change...

  • High tunable dielectric response of Pb0.87Ba0.1La0.02(Zr0.6Sn0.33Ti0.07)O3 thin film. Correia, T. M.; Zhang, Q. // Journal of Applied Physics;Sep2010, Vol. 108 Issue 4, p044107 

    The permittivity maximum of a sol-gel derived Pb0.87Ba0.1La0.02(Zr0.6Sn0.33Ti0.07)O3 (PBLZST) thin film was observed to appear at Tm=70 °C rather than at 40 °C as observed in the bulk ceramics with the same composition. Measurements of permittivity versus electric field (E) present two...

  • Film thickness dependence of electrocaloric effect in epitaxial Ba0.6Sr0.4TiO3 thin films. Qiu, J. H.; Jiang, Q. // Journal of Applied Physics;Feb2008, Vol. 103 Issue 3, p034119 

    Based on the phenomenological Landau–Devonshire thermodynamic theory, the film thickness dependence of electrocaloric effect in epitaxial Ba0.6Sr0.4TiO3 thin films is investigated. Theoretical analysis shows that the Ba0.6Sr0.4TiO3 thin films grown on LaAlO3 and MgO substrates have the...

  • Dielectric dispersion and tunability of sol-gel derived BaxSr1-xTiO3 thin films. Adikary, S. U.; Chan, H. L. W. // Journal of Materials Science;Nov2004, Vol. 39 Issue 21, p6523 

    Ba0.5Sr0.5TiO3, Ba0.6Sr0.4TiO3, Ba0.7Sr0.3TiO3 and Ba0.8Sr0.2TiO3 thin films were fabricated by a modified sol-gel technique on Pt(111)/Ti/SiO2/Si(100) substrates. All BaxSr1-xTiO3 films crystallized in the perovskite structure with a crack free microstructure and clear grain boundaries. Highest...

  • Electrical characteristics of barium titanate films prepared by laser ablation. Yeh, M. H.; Liu, Y. C.; Liu, K. S.; Lin, I. N.; Lee, J. Y. M.; Cheng, H. F. // Journal of Applied Physics;8/1/1993, Vol. 74 Issue 3, p2143 

    Focuses on the synthesis of the barium-titanium-oxygen ferroelectric films of quality suitable for applying as dielectrics dynamic random access memory. Use of laser ablation technique; Crystal structure and microstructure of the films; Value of the leakage current density.

  • Origin of antiphase domain boundaries and their effect on the dielectric constant of Ba[sub 0.5]Sr[sub 0.5]TiO[sub 3] films grown on MgO substrates. Li, Hao; Zheng, H.; Salamanca-Riba, L.; Ramesh, R.; Naumov, I.; Rabe, K. // Applied Physics Letters;12/2/2002, Vol. 81 Issue 23, p4398 

    Epitaxial Ba[sub 1-x]Sr[sub x]TiO[sub 3] (BST) with x = 0.5 films were grown on MgO substrates using pulsed-laser deposition. We have observed a high density of antiphase domain boundaries (ADB) in these BST films. We attribute the formation of the ADBs to the different crystal symmetry of the...

  • Thermally stable amorphous Ba[sup x]Ti[2-x]O[sub y] thin films. Liu, W.-T.; Lakshmikumar, S.T. // Applied Physics Letters;2/13/1995, Vol. 66 Issue 7, p809 

    Examines the amorphous Ba[sub x]Ti[sub 2-x]O[sub y] thin films deposited with the Ba/Ti ratios. Use of the reactive partially ionized beam deposition; Effect of the BaTiO[sup 3] crystallization on film thickness; Detection of a reaction between the films and silicon substrate.

  • Formation of c-axis oriented barium ferrite thin films by alternate deposition of a Fe3O4 layer... Hoshi, Y.; Kubota, Y. // Journal of Applied Physics;4/16/1997, Vol. 81 Issue 8, p4690 

    Studies the formation of c-axis oriented barium ferrite thin films by alternate deposition of a Fe3O4 layer and BaO.3Fe2O3 layer. Crystalline orientation of the film at a lower substrate temperature needed to deposit a film using a conventional sputter deposition method.

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

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

Try another library?
Sign out of this library

Other Topics