Atomic structure of Sr0.75Ba0.25Nb2O6 single crystal and composition-structure-property relationin (Sr,Ba)Nb2O6 solid solutions

Chernaya, T. S.; Maksimov, B. A.; Volk, T. R.; Ивлева, Л. И.; Simonov, V. I.

doi:10.1134/1.1309457

Cited by 64 publications

(31 citation statements)

References 9 publications

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“…There are two crystallographically independent octahedra, Nb(1)O 6 surrounded by two triangular and two pentagonal channels, the first being empty. The second type, Nb(2)O 6 , is surrounded by a triangular, a tetragonal and two pentagonal channels [25]. Both octahedra have a site multiplicity ratio of 4, which is in reasonable agreement with the experimental ratio of 3.3 for the intensity of the components.…”

Section: Raman Scatteringsupporting

confidence: 63%

“…According to the classical work of DiDomenico and Wemple [24] the optical properties of compounds with NbO 6 octahedra are governed by these units. Extensive structure studies [25] revealed that the Nb-O interatomic distance is independent of x for one of the two different oxygen-octahedra, but depends on x for the other one. In this octahedron the Nb-O distance increases with larger x-values for one apex ion, while it decreases for the other.…”

Section: Absorption Edgementioning

confidence: 99%

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Compositional dependence of optical and vibrational properties of strontium barium niobate (Sr_xBa_1–xNb₂O₆)

David

Tunyagi

Betzler

et al. 2007

Physica Status Solidi (b)

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The index of refraction, the optical band edge and the Raman scattering of strontium barium niobate, Sr x Ba 1-x Nb 2 O 6 with 0 38 0 77 x . < < . have been studied. The ordinary refractive index does not depend on x, while the extra-ordinary one increases with increasing x. The band edge is almost unaffected by the Baor Sr-content and shows a weak band bowing. Both the index of refraction and the band edge may be used for an optical determination of the composition of the crystal. Raman spectra show the typical behavior of tungsten bronze type crystals with broad bands and complicated spectral shapes.

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Section: Raman Scatteringsupporting

confidence: 63%

Section: Absorption Edgementioning

confidence: 99%

Compositional dependence of optical and vibrational properties of strontium barium niobate (Sr_xBa_1–xNb₂O₆)

David

Tunyagi

Betzler

et al. 2007

Physica Status Solidi (b)

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“…Basing on the obtained measurement data it was confirmed in accordance with the literature [3][4][5][6] that at room temperature SBN40 single crystals have the structure of space group P 4bm. Carrying out the temperature measurements, it was found that the above phase transition temperature (for SBN40 it is 429 K [9]) the structure transformed into the paraelectric, centrosymmetric symmetry with P 4/mbm space group, which is also in accordance with previous works [3][4][5].…”

Section: Resultssupporting

confidence: 75%

“…They also exhibit gradual crossover from conventional ferroelectric (SBN35) into utmost relaxor (SBN72) behavior [2]. So far, using the four-circle diffractometry the single crystals with a following compositions: SBN34, SBN47, SBN61, SBN82 [3], SBN50 [4] and SBN75 [5,6] were investigated.…”

Section: Introductionmentioning

confidence: 99%

Crystal Structure of the High Temperature Phase of Strontium Barium Niobate

et al. 2016

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Pure and undoped strontium-barium niobate Sr0.40Ba0.60Nb2O6 (SBN40) single crystals grown by the Czochralski method were investigated by single crystal X-ray diffraction methods. The study below TC (429 K for SBN40) confirmed the structure with P 4bm space group. Above this temperature the structure transforms into the paraelectric, centrosymmetric one with P 4/mbm space group. Analysis of the recorded diffraction patterns allowed to observe several signs of crystal structure modulation. On the registered diffraction images satellite reflections were found. A modulation vector q = (δ, ±δ, ), where δ = 0.3075(6) (at room temperature) was found and it was similar to that occurring in the SBN61. In addition, above the phase transition temperature on the (hk) planes with l integer a weak diffuse scattering was observed.

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“…The trigonal positions are vacant. This cation distribution was recently confirmed for SBN crystals with x = 0.61 [5] and 0.75 [6]. The compositional range of the ferroelectric TTB phase usually was defined within the values x = 0.25-0.75.…”

Section: Introductionmentioning

confidence: 72%

Dielectric Relaxation Phenomena in SBN Single Crystals Doped with Ce

et al. 2011

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The dielectric study of Sr 0.73 Ba 0.27 Nb 2 O 6 :Ce (SBN) crystals along [010] crystallographic axis was performed in the temperature region of 310-360 K and frequency range from 25 Hz up to 1 MHz. The thermal dipole relaxation of quasi-Debye-type for this orientation of sample was observed in both investigated structural phases. The phase transition was most clearly seen from the temperature dependence of the relaxation time at T c = 320 K. The relaxation processes were related to the collective oscillations of the Nb-O bonds in the two different type corner-sharing NbO 6 octahedra aligned along c-axis.

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Atomic structure of Sr0.75Ba0.25Nb2O6 single crystal and composition-structure-property relationin (Sr,Ba)Nb2O6 solid solutions

Cited by 64 publications

References 9 publications

Compositional dependence of optical and vibrational properties of strontium barium niobate (Sr_xBa_1–xNb₂O₆)

Compositional dependence of optical and vibrational properties of strontium barium niobate (Sr_xBa_1–xNb₂O₆)

Crystal Structure of the High Temperature Phase of Strontium Barium Niobate

Dielectric Relaxation Phenomena in SBN Single Crystals Doped with Ce

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Atomic structure of Sr0.75Ba0.25Nb2O6 single crystal and composition-structure-property relationin (Sr,Ba)Nb2O6 solid solutions

Cited by 64 publications

References 9 publications

Compositional dependence of optical and vibrational properties of strontium barium niobate (SrxBa1–xNb2O6)

Compositional dependence of optical and vibrational properties of strontium barium niobate (SrxBa1–xNb2O6)

Crystal Structure of the High Temperature Phase of Strontium Barium Niobate

Dielectric Relaxation Phenomena in SBN Single Crystals Doped with Ce

Contact Info

Product

Resources

About

Compositional dependence of optical and vibrational properties of strontium barium niobate (Sr_xBa_1–xNb₂O₆)

Compositional dependence of optical and vibrational properties of strontium barium niobate (Sr_xBa_1–xNb₂O₆)