TITLE

Ferroelectric and dielectric anisotropy in high-quality SrBi2Ta2O9 single crystals

AUTHOR(S)
Amorín, H.; Shvartsman, V. V.; Kholkin, A. L.; Costa, M. E. V.
PUB. DATE
December 2004
SOURCE
Applied Physics Letters;12/6/2004, Vol. 85 Issue 23, p5667
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
High-quality SrBi2Ta2O9 single crystals were obtained by a self-flux solution method. The crystals were naturally oriented with [001] direction perpendicular to the major face and edges parallel to [110] axes. The dielectric and ferroelectric properties of the crystals were investigated along the c axis and in the ab plane of the orthorhombic unit cell. The ferro–paraelectric phase transition was observed at TC=355 °C. The anisotropy of dielectric permittivity, i.e., the ratio between average permittivity in the ab plane and along c axis was about 10 at TC and decreased to ∼2 at room temperature. Saturated hysteresis loops were observed for switching in the ab plane. The spontaneous polarization along ferroelectric a axis was estimated to be ≈20 μC/cm2.
ACCESSION #
15305381

 

Related Articles

  • Toughening due to domain switching in single crystal ferroelectric materials. Sheng, Jianshun; Landis, Chad M. // International Journal of Fracture;Jan2007, Vol. 143 Issue 2, p161 

    In this paper Mode I steady state crack growth in single crystal ferroelectric materials is investigated. Specifically, the fracture toughness enhancement due to domain switching near a steadily growing crack tip is analyzed. For this purpose, an incremental phenomenological constitutive law for...

  • Electro-Optical Properties of Strontium–Barium Niobate Crystals and Their Relation to the Domain Structure of the Crystals. Volk, T.R.; Ivanov, N.R.; Isakov, D.V.; Ivleva, L.I.; Lykov, P.A. // Physics of the Solid State;Feb2005, Vol. 47 Issue 2, p305 

    The electro-optical coefficients rij and half-wave voltage Vλ/2 of strontium–barium niobate crystals poled in the ferroelectric phase are shown to vary along the polar axis. The rij (z) and Vλ/2(z) dependences indicate the presence of a residual domain density D(z) and clearly...

  • The anisotropy of ac conductivity and dielectric constant of anisotropic conductor—insulator composites. Hazama, Yuichi; Nakamura, Jun; Natori, Akiko // Journal of Materials Science;Jun2010, Vol. 45 Issue 11, p2843 

    We study the complex ac admittance tensor (ac conductivity and dielectric constant) of anisotropic conductor–insulator composite materials, based on anisotropic two-dimensional RC-networks consisting of randomly placed conductors and capacitors with different conductor existence (bond...

  • Ferroelectric nanoparticles in low refractive index liquid crystals for strong electro-optic response. Kaczmarek, M.; Buchnev, O.; Nandhakumar, I. // Applied Physics Letters;3/10/2008, Vol. 92 Issue 10, p103307 

    Functional materials based on ferroelectric, inorganic nanoparticles, and low refractive index nematic liquid crystals show strong induced birefringence and dielectric anisotropy. Birefringence can increase by a factor of 2 and dielectric anisotropy by a factor of 3 as compared with nominally...

  • Rotator and extender ferroelectrics: Importance of the shear coefficient to the piezoelectric properties of domain-engineered crystals and ceramics. Davis, Matthew; Budimir, Marko; Damjanovic, Dragan; Setter, Nava // Journal of Applied Physics;3/1/2007, Vol. 101 Issue 5, p054112 

    The importance of a high shear coefficient d15 (or d24) to the piezoelectric properties of domain-engineered and polycrystalline ferroelectrics is discussed. The extent of polarization rotation, as a mechanism of piezoelectric response, is directly correlated to the shear coefficient. The terms...

  • Effect of Ba-substitution on the structure and properties of Pb0.8Ba0.2[(In1/2Nb1/2)1-xTix]O3 ceramics. Wongsaenmai, S.; Qu, W.; Ananta, S.; Yimnirun, R.; Tan, X. // Applied Physics A: Materials Science & Processing;Sep2007, Vol. 88 Issue 4, p757 

    Ferroelectric ceramics with formula Pb0.8Ba0.2[(In1/2Nb1/2)1-xTix]O3 (PBINT) (x=0.0,0.1,0.2,0.3,0.4 and 0.5) were prepared via a two-step solid state reaction method. It was found that ceramics with compositions in the range of x=0.0∼0.3 showed a pseudo-cubic structure, whereas the ceramic...

  • Ferroelectric properties of SrTiO[sub 3]-PbTiO[sub 3] solid solutions. Lemanov, V. V.; Smirnova, E. P.; Tarakanov, E. A. // Physics of the Solid State;Apr97, Vol. 39 Issue 4, p628 

    Dielectric properties of ceramic samples of Sr[sub 1-x]Pb[sub x]TiO[sub 3] solid solutions for x varying from 0 to 0.3 have been studied. The ferroelectric phase transition in this system has been established to persist down to x = 0.005. Within the x values of 0.002 to 0.05, the ferroelectric...

  • Transmission properties of terahertz pulses through an ultrathin subwavelength silicon hole array. Azad, Abul K.; Zhao, Y.; Zhang, W. // Applied Physics Letters;4/4/2005, Vol. 86 Issue 14, p141102 

    We demonstrate extraordinary THz transmission of an array of subwavelength apertures patterned on ultrathin highly doped silicon by reactive ion etching. The zero-order transmission spectra exhibit well-defined maxima and minima which are attributed to the excitation of surface-plasmon...

  • Coercivity control in finite arrays of magnetic particles. Yang, Bo; Zhao, Yang // Journal of Applied Physics;Nov2011, Vol. 110 Issue 10, p103908 

    Micromagnetic simulation has been performed for two-dimensional arrays of single-domain magnetic particles using the Landau-Lifshitz equation of motion and an energy minimization method. Effects of array anisotropy and spin positional disorder on the hysteresis loop and coercivity of the...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics