Novel Zirconia-Based Superionic Conductors: The Electrical Conductivity of Y–Zr–O–N Materials

Wendel, J.; Lerch, Martin; Laqua, W.

doi:10.1006/jssc.1998.8013

Cited by 53 publications

(32 citation statements)

References 26 publications

(25 reference statements)

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“…The incorporation of nitrogen into oxides is a subject of growing importance as oxynitrides have recently been studied as new pigments [40], materials for UV optics [41] or as nitrogen ion conductors at high temperatures [42]. Concerning the last topic, it is known that nitrogen can partially replace oxygen in yttria-stabilised zirconia (YSZ) at elevated temperatures and low oxygen activities by occupying oxygen vacancies.…”

Section: Nitrogen In Ysz: Depth Profiles and Quantificationmentioning

confidence: 99%

Secondary ion mass spectrometry (SIMS) – a powerful tool for studying mass transport over various length scales

Souza

Martin

2007

Phys. Status Solidi (c)

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Secondary Ion Mass Spectrometry (SIMS) is a sophisticated analytical technique for determining the elements present in materials, and especially on surfaces, with trace level sensitivity and high spatial resolution. The aim of this article is to give a short introduction to the SIMS technique and to focus then on selected case studies of mass transport in oxides over various length scales. It is shown that SIMS is capable of analysing diffusion profiles on a broad length scale, from some tens of nanometres to several hundred micrometres, which makes it possible to measure diffusion coefficients from about 10–18 cm2 s–1 to 10–6 cm2 s–1. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Section: Nitrogen In Ysz: Depth Profiles and Quantificationmentioning

confidence: 99%

Secondary ion mass spectrometry (SIMS) – a powerful tool for studying mass transport over various length scales

Souza

Martin

2007

Phys. Status Solidi (c)

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“…While the ordered phases are of great interest in crystal chemistry because of their complex ordering schemes, yttria-and calcia-doped materials are, to our knowledge, the first examples of solids with a high mobility of nitrogen anions, as shown recently by tracer diffusion experiments [8][9][10]. Furthermore, the ionic conductivity of nitrogen-doped zirconia is superior compared to pure cationdoped materials at temperatures above 1100°C [11]. Unfortunately, for a deeper understanding of the effect of nitrogen on the conductivity mechanism (defect clusters, short range order etc.)…”

Section: Introductionmentioning

confidence: 94%

Nitrogen‐doped zirconia single crystals

Rödel¹,

Wang

Lerch

et al. 2006

Cryst. Res. Technol.

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The aim of this work is the preparation of nitrogen-doped single crystals of cation-stabilized zirconia. Thin plates of these crystals were nitrided in a graphite heated resistance furnace with nitrogen as reaction gas. Several dwell times and reaction temperatures were tested and their effect on the amount of incorporated nitrogen is investigated. During nitridation at high temperatures a rock salt-type 'ZrN' layer grows on the surface, leading to the destruction of the crystal. In contrast to the fluorite-type bulk material, which can be described as a fast anion conductor, the surface layer shows electronic conductivity. For possible applications of the bulk material (solid electrolyte) the formation of the surface layer must be avoided. Therefore, the interface between surface epilayer and bulk material was investigated in detail by electron microscopy methods.

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“…Nitrogen-conducting zirconium oxynitrides [3,4] are promising new ammonia decomposition catalysts that avoid the presence of neighboring metal sites. The combination of an appropriate intrinsic reactivity toward nitrogen and low reducibility make these materials promising candidates for ammonia catalysts.…”

Section: Introductionmentioning

confidence: 99%

The impact of nitrogen mobility on the activity of zirconium oxynitride catalysts for ammonia decomposition

Soerijanto

Rödel

Wild

et al. 2007

Journal of Catalysis

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Novel Zirconia-Based Superionic Conductors: The Electrical Conductivity of Y–Zr–O–N Materials

Cited by 53 publications

References 26 publications

Secondary ion mass spectrometry (SIMS) – a powerful tool for studying mass transport over various length scales

Secondary ion mass spectrometry (SIMS) – a powerful tool for studying mass transport over various length scales

Nitrogen‐doped zirconia single crystals

The impact of nitrogen mobility on the activity of zirconium oxynitride catalysts for ammonia decomposition

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