High pressure synthesis of cuprate perovskites

D. A. Vander Griend, Kenneth R Poeppelmeier, H. Toganoh, M. Azuma, M. Takano

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Abstract

As members of the ABO3 family of oxides, the Ln4Cu3MoO12 family of compounds (Ln = La, Pr, Nd, and Sm) all crystallize in the rare-earth hexagonal structure at ambient pressure. At 6 GPa and 1200 K they transform to layered perovskite structures which are -15% more dense than their ambient pressure variants. The high-pressure phases exhibit two-dimensional antiferromagnetic ordering above 200 K, which is indicative of pure copper-oxygen layers. The lanthanum analogue can be doped with up to 25% strontium, (La/Sr)4Cu3MoO12. A large decrease in resistivity is observed with doping but the compound does not become metallic or superconducting.

Original languageEnglish
Pages (from-to)335-338
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume341-348
Issue numberPART 1
Publication statusPublished - 2000

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ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Vander Griend, D. A., Poeppelmeier, K. R., Toganoh, H., Azuma, M., & Takano, M. (2000). High pressure synthesis of cuprate perovskites. Physica C: Superconductivity and its Applications, 341-348(PART 1), 335-338.