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Synthesis of GaSr2Can−1CunO2n+3(n = 2 − 5) Prepared by Solid-State Reaction Method

Published online by Cambridge University Press:  15 February 2011

E. Chavira ,
E. Aguila ,
L. Baños  and
O. Navarro
E. Chavira
Affiliation:
Instituto de Investigaciones en Materiales, U.N.A.M., Apartado Postal 70–360, 04510, México D.F., MEXICO, chavira@servidor.unam.mx
E. Aguila
Affiliation:
Instituto de Investigaciones en Materiales, U.N.A.M., Apartado Postal 70–360, 04510, México D.F., MEXICO, chavira@servidor.unam.mx
L. Baños
Affiliation:
Instituto de Investigaciones en Materiales, U.N.A.M., Apartado Postal 70–360, 04510, México D.F., MEXICO, chavira@servidor.unam.mx
O. Navarro
Affiliation:
Instituto de Investigaciones en Materiales, U.N.A.M., Apartado Postal 70–360, 04510, México D.F., MEXICO, chavira@servidor.unam.mx
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Abstract

We present some experimental results of the family of compounds with a general formula GaSr2Can−1CunO2n+3(n = 2,3, 4, 5). This system has been synthesized using the solid-state reaction method at ambient pressure. We have found that the reaction temperature for these compounds is 930±3°C; the samples melt just above this temperature. The powder diffraction data were analyzed assuming a single-phase and the obtained structure is different to the one prepared at high pressure [1,2]. However, comparing the powder patterns we found that the compounds are isostructural to the Al — Sr — Ca — Cu — O system prepared at high pressure [3]. For n = 2,3,4 and 5 a shift of the (105) peak has been observed, which is due to the increases in the number of Ca and Cu — O2 planes in the crystalline structure. Notice that to obtain a single-phase for the above compounds, high pressure is not necessary.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 453: Symposium R – Solid State Chemistry of Inorganic Materials , 1996 , 165
Copyright
Copyright © Materials Research Society 1997

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References

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