A New Type of Homologous Series in the La-Cu-O System

Authors

Robert J. Cava, Princeton UniversityFollow
Theo Siegrist, Florida State UniversityFollow
Bart Hessen, University of Groningen
J. J. Krajewski, Los Alamos National Laboratory
W. F. Peck, LucentFollow
Bertram Batlogg, ETH ZurichFollow
Hidenori Takagi, University of StuttgartFollow
Joseph V. Waszczak, University of WashingtonFollow
Lynn Schneemeyer, Montclair State UniversityFollow
H. W. Zandbergen, Delft University of TechnologyFollow

Document Type

Article

Publication Date

6-15-1991

Abstract

The synthesis and structural characterization of a new type of homologous series of lanthanum cuprates, with the general formula La4+4nCu8+8nO14+8n, is reported. The n=2 and n=3 members, La2Cu2O5 and La8Cu7O19, synthesized in bulk, are stable over very narrow temperature ranges in air and oxygen. Higher members (n > 3) have been observed by electron microscopy. The crystal structure of La2Cu2O5 consists of thin slabs of La2CuO4 sandwiched between CuO planes of complex low-dimensional geometry. The temperature dependent magnetic susceptibilities of La2Cu2O5 and La8Cu7O19 are characteristic of low-dimensional Heisenberg antiferromagnets with a remarkably low exchange coupling energy.

DOI

10.1016/0921-4534(91)90306-J

Montclair State University Digital Commons Citation

Cava, Robert J.; Siegrist, Theo; Hessen, Bart; Krajewski, J. J.; Peck, W. F.; Batlogg, Bertram; Takagi, Hidenori; Waszczak, Joseph V.; Schneemeyer, Lynn; and Zandbergen, H. W., "A New Type of Homologous Series in the La-Cu-O System" (1991). Department of Chemistry and Biochemistry Faculty Scholarship and Creative Works. 399.
https://digitalcommons.montclair.edu/chem-biochem-facpubs/399