The first superconducting thin film oxycarbonates coherent intergrowth of several members of a new structural series (CaCuO2)m (Ba2CuO2CO3)n

Allen, J. S.; Mercey, B.; Prellier, W.; Hamet, J. F.; Hervieu, M.; Raveau, B.

doi:10.1016/0921-4534(94)02356-5

Cited by 66 publications

(30 citation statements)

References 20 publications

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“…This makes them attractive materials for a variety of applications if we can grow high-quality thin films of these compounds. However, there were few reports on their thin film growth [12][13][14][15][16] growth of superconducting (Cu, C)Ba 2 Ca (nÀ1) Cu n O y thin films with n ¼ 1-4 using MBE.…”

Section: Introductionmentioning

confidence: 99%

Thin film growth of (Cu, C)Ba2Ca(n−1)CunOy (n=1–4) superconductor by molecular beam epitaxy

Shibata

Karimoto

Tsukada

et al. 2007

Journal of Crystal Growth

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Section: Introductionmentioning

confidence: 99%

Thin film growth of (Cu, C)Ba2Ca(n−1)CunOy (n=1–4) superconductor by molecular beam epitaxy

Shibata

Karimoto

Tsukada

et al. 2007

Journal of Crystal Growth

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“…Another structural family exhibits "pure" carbonate layers, substituting copper layers in a perovskite-type matrix [49]. The structure consists of an intergrowth of one Ba2Cu02C03 unit with m units of the so-called "infinite layer structure", CaCu02, according to the general formulation (CaCu02)m(Ba2Cu02C03)n. The main member Ba2Ca3CU4CO308 (m = 3, n = 1), consists of double layers of Cu04 groups sandwiched by pyramidal layers and interconnected with layers of C03 groups (Fig.…”

Section: Introductionmentioning

confidence: 99%

Mixed Layers in Copper Based Superconducting Materials

Hervieu

Tendeloo

Michel

et al. 1996

Microsc. Microanal. Microstruct.

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Abstract. 2014 Recently discovered series of high Tc superconductors, characterized by the existence of two types of cations within the same layer, are presented. The first family concerns the mercury based cuprates, Hg1-xMxA2Cam-1CumO2m+2+03B4, with A = Ba and/or Sr, which exhibit structures closely related to that of the thallium cuprates TlBa2Cam-1CumO2m+3. They differ from the thallium cuprates by a high oxygen deficiency at the level of the mercury layer. It is shown that cations such as M = Cu, Pb, Tl, Bi, Ce, Pr, Cr, V, Mo, W, Ti, Sr, Ca,... can partially substitute for mercury ions, stabilizing the structures. The cationic composition of the layer depends indeed on the nature of the M cation but also on that of the alkaline earth A. For given A and M cations, the x value remains unchanged even when the number of copper layers varies. M and Hg cations are either statistically distributed over the same site or ordered. Different types of ordering have been detected. Another way of generating mixed layers is to shear periodically the structure, leading to the formation of the so called "collapsed phase". In the collapsed bismuth cuprates, bismuth and copper segments, a few octahedra long, alternate in strongly waving layers. In the collapsed oxycarbonates, carbonate groups and M cations are ordered within the intermediate layer so that they can be simply described from a partial and ordered substitution of carbon for Hg,Tl, Bi and other M cations building the intermediate layer. The oxycarbonitrates (Y1-xCax)nBa2nCu3n-1(C,N)O3O7n-3 can also be described as an ordered substitution of carbon for copper in the 123 matrix. The different families of superconducting materials which are generated by such mechanisms are described as well as the way the different species are distributed within the mixed layers. Their influence on the physical properties are discussed.

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“…This strain effect makes possible to grow as thin film metastable phases ͑e.g., infinite layers 18 and oxycarbonate superconductors 19 ͒ as those synthesized using the high pressure processes. 20,21 It should be pointed out here that the induced pressure is biaxial, in contrast to what is obtained in the case of hydrostatic pressure already published.…”

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confidence: 99%