Three-dimensional polarization imaging of (Ba,Sr)TiO3:MgO composites

Irvin, Patrick; Levy, Jeremy; Guo, Ruyan; Bhalla, Amar
January 2005
Applied Physics Letters;1/24/2005, Vol. 86 Issue 4, p042903
Academic Journal
The dielectric tuning and loss of (Ba,Sr)TiO3:MgO bulk composites depend strongly on the connectivity and interaction among the two phases. To investigate this relationship, the polar structure and dynamics of these composites are mapped as a function of space and time using a pair of three-dimensional probes: second-harmonic confocal scanning optical microscopy (SH-CSOM), which maps ferroelectric polarization in three dimensions, and time-resolved scanning optical microscopy (TR-CSOM), which maps polarization dynamics along two spatial dimensions and one time dimension. SH-CSOM measurements reveal a high degree of homogeneity within the (Ba,Sr)TiO3 regions, while TR-CSOM measurements indicate that topologically connected regions respond with a spatially uniform phase.


Related Articles

  • Dielectric tunability of Ba0.6Sr0.4TiO3/poly(methyl methocrylate) composites in 1-3-type structure. Xiang, Feng; Wang, Hong; Li, Kecheng; Chen, Yuehua; Zhang, Minghui; Shen, Ziyuan; Yao, Xi // Applied Physics Letters;11/5/2007, Vol. 91 Issue 19, p192907 

    The Ba0.6Sr0.4TiO3 (BST)/poly(methyl methacrylate) (PMMA) tunable composites in 1-3-type structure consisting of BST rods in low-permittivity PMMA matrix are fabricated by dice and fill technique. For the composite containing 41.6 vol % BST, the permittivity and the loss tangent of the composite...

  • Microstructure and dielectric properties of Mg-doped barium strontium titanate ceramics. Su, B.; Button, T. W. // Journal of Applied Physics;2/1/2004, Vol. 95 Issue 3, p1382 

    The dielectric properties of Ba[sub 0.8]Sr[sub 0.2]TiO[sub 3] ceramics doped with Mg from 0.5 to 10 mol % have been investigated systematically. Two effects of Mg doping on the dielectric properties of the Ba[sub 0.8]Sr[sub 0.2]TiO[sub 3] ceramics have been observed. At low Mg doping...

  • Effect of the thermal expansion matching on the dielectric tunability of (100)-one-axis-oriented (Ba0.5Sr0.5)TiO3 thin films. Ito, Shinichi; Funakubo, Hiroshi; Koutsaroff, Ivoyl P.; Zelner, Marina; Cervin-Lawry, Andrew // Applied Physics Letters;4/2/2007, Vol. 90 Issue 14, p142910 

    The impact of the residual strain induced by the thermal strain on the dielectric tunability was systematically studied for rf sputtered (100)-one-axis-oriented polycrystalline (Ba0.5Sr0.5)TiO3 films. These films were grown on various substrates with different thermal expansion coefficients...

  • Thermal equilibrium noise with 1/f spectrum from frequency independent dielectric losses in barium strontium titanate. Vandamme, L. K. J.; Khalfallaoui, A.; Leroy, G.; Vélu, G. // Journal of Applied Physics;Mar2010, Vol. 107 Issue 5, p053717-1 

    We investigated the dielectric losses of doped and undoped BaSrTiO3 (BST) from thermal noise measurements. The results are compared to impedance measurements. The value for the frequency independent loss angle is about tg δ=2×10-2 in the range 100

  • The sol-gel synthesis of barium strontium titanate ceramics. WODECKA-DUŚ, B.; LISIŃSKA-CZEKAJ, A.; ORKISZ, T.; ADAMCZYK, M.; OSIŃSKA, K.; KOZIELSKI, L.; CZEKAJ, D. // Materials Science (0137-1339);2007, Vol. 25 Issue 3, p791 

    The sol-gel derived powders of the chemical composition (Ba0.6Sr0.4)TiO3 (BST) were used in the preparation of ceramic samples. Barium acetate, strontium acetate and tetra-butyl titanate were used as starting materials. The free sintering method was used for the final densification of ceramics....

  • Fast Switching Ferroelectric Materials for Accelerator Applications. Kanareykin, A.; Nenasheva, E.; Yakovlev, V.; Dedyk, A.; Karmanenko, S.; Kozyrev, A.; Osadchy, V.; Kosmin, D.; Schoessow, P.; Semenov, A. // AIP Conference Proceedings;2006, Vol. 877 Issue 1, p311 

    Fast switching (<10 nsec) measurement results on the recently developed BST(M) (barium strontium titanium oxide composition with magnesium-based additions) ferroelectric materials are presented. These materials can be used as the basis for new advanced technology components suitable for...

  • Effects of ambient gas pressure on (1-x) SrTiO3-xBaTiO3 films prepared by pulsed laser deposition. Tseng, Tzu-Feng; Yeh, Ming-Hua; Liu, Kuo-Shung; Lin, I-Nan // Journal of Applied Physics;11/1/1996, Vol. 80 Issue 9, p4984 

    Deals with a study which assessed the effect of ambient gas pressure in pulsed laser deposition on the lattice parameters of strontium barium titanate thin films. Experimental details; Results; Discussion; Conclusion.

  • Diffusion effects of alumina on microstructures and positive temperature coefficient resistivity (PTCR) characteristics of barium-strontium titanate ceramics. Bomlai, P.; Sirikulrat, N. // Journal of Materials Science;Feb2005, Vol. 40 Issue 3, p779 

    Investigates the diffusion effects of alumina on microstructures and the positive temperature coefficient resistivity (PTCR) characteristics of barium–strontium titanate (BST) ceramics. Finding of a low PTCR response and a high resistivity at room temperature; Conclusion that surrounding...

  • Critical concentrations in Ba-doped incipient ferroelectric SrTiO[sub 3]. Guzhva, M. E.; Lemanov, V. V.; Markovin, P. A.; Kleemann, W. // Physics of the Solid State;Apr97, Vol. 39 Issue 4, p618 

    Temperature-induced variations of light refraction and dielectric permittivity in single-crystal Sr[sub l-x]Ba[sub x]TiO[sub 3] (x=0.02, 0.05, 0.07, and 0.14), Sr[sub 1-x]Ca[sub x]TiO[sub 3] (x=0.014), and in nominally pure strontium titanate have been studied within the 17-300 K temperature...


Read the Article


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

Try another library?
Sign out of this library

Other Topics