Crystal Chemistry of High-Tc Superconducting Copper Oxides

Raveau, B.; Michel, C.; Hervieu, M.; Groult, D.

doi:10.1007/978-3-642-83892-7

Cited by 158 publications

(90 citation statements)

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“…16) and HREM images . Intergrowths involving n = 5 and 7 members have been observed in HREM images of the 2324 TI superconductors by Raveau, Michel, Hervieu & Groult (1991). Intergrowth defects involving a rock-salt layer (e.g.…”

Section: Long-period Mixed Polytypes and Intergrowthsmentioning

confidence: 97%

“…Intergrowth defects involving a rock-salt layer (e.g. intergrowth of T1-1212 and TI-2122 members) have also been observed (Raveau Michel, Hervieu & Groult, 1991). It appears that the triple rock-salt layer [(BaO)(TIO) 2] intergrows with double [(BaO)(T10)] layers.…”

Section: Long-period Mixed Polytypes and Intergrowthsmentioning

confidence: 99%

“…The study of modulation in cuprates has been extensively carded out by a combination of various electron microscopic techniques (Kihlborg, 1990, and references therein; Hewat & Hewat, 1994;Raveau, Michel, Hervieu & Groult, 1991). An HREM image showing modulation is given in Fig.…”

Section: Modulationmentioning

confidence: 99%

“…Oxides such as BaPbl_xBixO 3 and LiTi204 had transition temperatures of "-,13 K. The discovery of superconductivity around 30 K in the La-Ba-Cu-O family (Bednorz & MUller, 1986) completely changed the situation. Since then a variety of cuprate superconductors with transition temperatures up to 150K have been synthesized and characterized (Rao, 1991a;Raveau, Michel, Hervieu & Groult, 1991;Nunez-Regueiro, Tholence, Antipov, Capponi & Marezio, 1993). The structures of these materials have been extensively investigated by X-ray and neutron diffraction techniques (especially powder profile analysis) and high-resolution electron microscopy.…”

Section: Introductionmentioning

confidence: 99%

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Structural aspects of superconducting cuprates

Rao¹,

Ganguli²

1995

Acta Crystallogr Sect B

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Salient structural features of the important families of cuprate superconductors are briefly reviewed. Correlations between the superconducting transition temperature and some of the crucial structure parameters are discussed. Correlations include those with the in-plane Cu--O distances, apical Cu--O distance, Madelung potentials and bond valence sums. The transformation of YBa2Cu306. 7 (123 cuprate) to a YBa2Cu408 (124)-type phase is examined. Structural features of the newly discovered oxyanion derivatives of cuprates are pointed out.

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Section: Long-period Mixed Polytypes and Intergrowthsmentioning

confidence: 97%

Section: Long-period Mixed Polytypes and Intergrowthsmentioning

confidence: 99%

Section: Modulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structural aspects of superconducting cuprates

Rao¹,

Ganguli²

1995

Acta Crystallogr Sect B

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“…This unusually high value is rarely seen in air-sintered copper oxides. 8 Such a high valence is described in terms of "p-hole" (hole on oxygen ion), which can often be a cause of metallic oxides. 9 Yet, the nature of the metallic conduction of this oxide is not well understood.…”

Section: Introductionmentioning

confidence: 99%

An origin of good electrical conduction in La4BaCu5O13+δ

Mori

Asai

Terasaki

et al. 2015

Journal of Applied Physics

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We have prepared a set of polycrystalline samples of the metallic copper oxide La 4 BaCu 5Àx Co x O 13þd (0 x 0.35) and have measured the resistivity from 4 to 800 K. All the resistivities show metallic temperature dependence with a small magnitude less than 2 mX cm at 800 K, indicating that the metallic conduction is robust against impurities. The robust metallic conduction further suggests that this class of oxide is a promising candidate for electrical leads at high temperature, which might replace platinum. A detailed measurement and analysis on the Hall resistivity have revealed that at least two components are responsible for the electrical conduction, in which a large number of electrons of moderate mobility coexist with a much smaller number of holes of extremely high mobility. This large electron density well screens the impurity potential and retains the metallic conduction against 7% impurity doping. V C 2015 AIP Publishing LLC.

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High resolution electron microscopy investigations of interface and other structure defects in some ceramics

Wen

Liu

1998

Microsc. Res. Tech.

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Crystal Chemistry of High-Tc Superconducting Copper Oxides

Cited by 158 publications

References 0 publications

Structural aspects of superconducting cuprates

Structural aspects of superconducting cuprates

An origin of good electrical conduction in La4BaCu5O13+δ

High resolution electron microscopy investigations of interface and other structure defects in some ceramics

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