Filled oxygen-deficient strontium barium niobates

Jason H. Chan; Jonathan A. Bock; Hanzheng Guo; Susan Trolier-McKinstry; Clive A. Randall

doi:10.1111/jace.14598

Filled oxygen-deficient strontium barium niobates

Jason H. Chan, Jonathan A. Bock, Hanzheng Guo, Susan Trolier-McKinstry, Clive A. Randall

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Filled strontium barium niobate (SBN, Sr_xBa₆₋ _xNb₁₀O_30−δ) compositions from the barium end-member to a Sr:Ba ratio of 80:20 were fabricated using conventional sintering under oxygen-deficient conditions. Single-phase specimens were obtained when sintered at 1350°C under a reducing condition of about 1.0 × 10⁻¹⁶ atm pO₂. X-ray diffraction and energy dispersive spectroscopy using scanning electron microscopy and transmission electron microscopy were used to confirm the phase-purity. Lattice parameters derived from Rietveld refinements were used to trace Vegard's Law over the solid solution. It was found that Vegard's Law is followed over two ranges, which is believed to be due to preferential site occupancy of the A sites as the Sr content changes. The successful fabrication of filled SBN bronzes provides an avenue for correlating trends in electrical characteristics of the SBN solid solution.

Original language	English (US)
Pages (from-to)	774-782
Number of pages	9
Journal	Journal of the American Ceramic Society
Volume	100
Issue number	2
DOIs	https://doi.org/10.1111/jace.14598
State	Published - Feb 1 2017

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Materials Chemistry

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10.1111/jace.14598

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title = "Filled oxygen-deficient strontium barium niobates",

abstract = "Filled strontium barium niobate (SBN, SrxBa6− xNb10O30−δ) compositions from the barium end-member to a Sr:Ba ratio of 80:20 were fabricated using conventional sintering under oxygen-deficient conditions. Single-phase specimens were obtained when sintered at 1350°C under a reducing condition of about 1.0 × 10−16 atm pO2. X-ray diffraction and energy dispersive spectroscopy using scanning electron microscopy and transmission electron microscopy were used to confirm the phase-purity. Lattice parameters derived from Rietveld refinements were used to trace Vegard's Law over the solid solution. It was found that Vegard's Law is followed over two ranges, which is believed to be due to preferential site occupancy of the A sites as the Sr content changes. The successful fabrication of filled SBN bronzes provides an avenue for correlating trends in electrical characteristics of the SBN solid solution.",

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AU - Chan, Jason H.

AU - Bock, Jonathan A.

AU - Guo, Hanzheng

AU - Trolier-McKinstry, Susan

AU - Randall, Clive A.

PY - 2017/2/1

Y1 - 2017/2/1

N2 - Filled strontium barium niobate (SBN, SrxBa6− xNb10O30−δ) compositions from the barium end-member to a Sr:Ba ratio of 80:20 were fabricated using conventional sintering under oxygen-deficient conditions. Single-phase specimens were obtained when sintered at 1350°C under a reducing condition of about 1.0 × 10−16 atm pO2. X-ray diffraction and energy dispersive spectroscopy using scanning electron microscopy and transmission electron microscopy were used to confirm the phase-purity. Lattice parameters derived from Rietveld refinements were used to trace Vegard's Law over the solid solution. It was found that Vegard's Law is followed over two ranges, which is believed to be due to preferential site occupancy of the A sites as the Sr content changes. The successful fabrication of filled SBN bronzes provides an avenue for correlating trends in electrical characteristics of the SBN solid solution.

AB - Filled strontium barium niobate (SBN, SrxBa6− xNb10O30−δ) compositions from the barium end-member to a Sr:Ba ratio of 80:20 were fabricated using conventional sintering under oxygen-deficient conditions. Single-phase specimens were obtained when sintered at 1350°C under a reducing condition of about 1.0 × 10−16 atm pO2. X-ray diffraction and energy dispersive spectroscopy using scanning electron microscopy and transmission electron microscopy were used to confirm the phase-purity. Lattice parameters derived from Rietveld refinements were used to trace Vegard's Law over the solid solution. It was found that Vegard's Law is followed over two ranges, which is believed to be due to preferential site occupancy of the A sites as the Sr content changes. The successful fabrication of filled SBN bronzes provides an avenue for correlating trends in electrical characteristics of the SBN solid solution.

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Filled oxygen-deficient strontium barium niobates

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