The Crystal Structures, Microstructure and Ionic Conductivity of Ba2In2O5 and Ba(In Zr1−)O3−/2

Berastegui, P.; Hull, S.; García-García, Francisco J.; Eriksson, Sandra

doi:10.1006/jssc.2001.9455

Cited by 105 publications

(106 citation statements)

References 20 publications

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“…The structural models in Ibm2 and Pcmn differ from the orientation of the In(2)O 4 tetrahedra (Fig. 2) in the oxygen deficient layers and, as shown by Berastegui using TEM [2], the reality is likely a mixture of these different configurations. Therefore, the structure is better described in the Icmm which can be considered as the superimposition of these two later models.…”

Section: Composition X=01 At Room Temperaturementioning

confidence: 86%

“…Ca 2 Fe 2 O 5 was described in Pcmn [15] and Ba 2 In 2 O 5 in Ibm2 [14] and Icmm [2] space groups. The structural models in Ibm2 and Pcmn differ from the orientation of the In(2)O 4 tetrahedra (Fig.…”

Section: Composition X=01 At Room Temperaturementioning

confidence: 99%

“…Its symmetry is orthorhombic with the following unit-cell: a B = 2 a P =6.0991Å, b B =4a P =16.7365Å, c B = 2 a P =5.9622Å (a P , b P , c P corresponding to the perovskite cell) [2]. It can be viewed as an intergrowth of In(1)O 6 octahedral layers alternating with In(2)O 4 tetrahedral layers, barium atoms being located in the B site of the perovskite.…”

mentioning

confidence: 99%

“…In the orthorhombic polymorph, there are two possibilities. They can substitute either the In(1) site, located in the octahedral layers (1) or the In(2) site, located in the tetrahedral layers (2). Moreover, the substitution of indium by a cation with valence higher than 3 should induce the introduction of interstitial oxygen atoms in the brownmillerite type structure.…”

mentioning

confidence: 99%

“…Thus, data collected at room temperature were refined using the model proposed by Berastegui [2]. Molybdenum was first introduced in both In(1) and In(2) sites with a constrain on their occupancy to verify the initial composition.…”

mentioning

confidence: 99%

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Section: Composition X=01 At Room Temperaturementioning

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Section: Composition X=01 At Room Temperaturementioning

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Oxygen Diffusion Mechanisms in Two Series of Oxide Ion Conductors: BIMEVOX and Brownmillerite Materials

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Superionic Materials: Structural Aspects

Hull

2009

Solid State Electrochemistry I

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Superionic conductors are solids which show high levels of ionic conductivity, which often approach values more typical of ionic liquids. This behavior is associated with the presence of extensive dynamic disorder within the crystalline lattice, and the nature of the defects has long proved a challenge to both experimental and computational approaches. This chapter provides a short introduction to the major techniques used to probe the structure-property relationships within superionic conductors, highlighting the roles of X-ray diffraction, neutron diffraction, EXAFS, NMR, and molecular dynamics methods. The relative advantages and limitations of each method are briefly described, followed by a discussion of the major families of highly conducting compounds and an assessment of the current state of knowledge concerning their structural properties. OverviewThe high levels of ionic conductivity associated with superionic conductors, which often approach values more typical of ionic liquids, are associated with the presence of extensive dynamic disorder within the crystalline lattice. As a consequence, a full understanding of the interplay between the structural and conducting properties of these important materials requires a detailed characterization of both the long-range arrangement of the ions within the crystal lattice and the short-range ion-ion correlations within the defects. The presence of significant levels of disorder, which can be both intrinsic (thermally induced) and extrinsic (due to chemical doping) in origin, presents a challenge to the conventional experimental methods used to provide structural information. In the case of superionic conductors, no one technique can provide a complete picture, and it is often necessary to employ several complementary approaches, of which X-ray diffraction (XRD), neutron diffraction, Solid State Electrochemistry I: Fundamentals, Materials and their Applications. Edited by Vladislav V. Kharton

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The Crystal Structures, Microstructure and Ionic Conductivity of Ba2In2O5 and Ba(In Zr1−)O3−/2

Cited by 105 publications

References 20 publications

A neutron diffraction study of the oxygen diffusion in molybdenum doped Ba2In2O5

A neutron diffraction study of the oxygen diffusion in molybdenum doped Ba2In2O5

Oxygen Diffusion Mechanisms in Two Series of Oxide Ion Conductors: BIMEVOX and Brownmillerite Materials

Superionic Materials: Structural Aspects

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