A new type of homologous series in the La-Cu-O system

R. J. Cava; T. Siegrist; B. Hessen; J. J. Krajewski; W. F. Peck; B. Batlogg; H. Takagi; J. V. Waszczak; L. F. Schneemeyer; H. W. Zandbergen

doi:10.1016/0921-4534(91)90306-J

A new type of homologous series in the La-Cu-O system

R. J. Cava, T. Siegrist, B. Hessen, J. J. Krajewski, W. F. Peck, B. Batlogg, H. Takagi, J. V. Waszczak, L. F. Schneemeyer, H. W. Zandbergen

Chemistry and Biochemistry

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Abstract

The synthesis and structural characterization of a new type of homologous series of lanthanum cuprates, with the general formula La_4+4nCu_8+8nO_14+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.

Original language	English
Pages (from-to)	115-121
Number of pages	7
Journal	Physica C: Superconductivity and its applications
Volume	177
Issue number	1-3
DOIs	https://doi.org/10.1016/0921-4534(91)90306-J
State	Published - 15 Jun 1991

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title = "A new type of homologous series in the La-Cu-O system",

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.",

author = "Cava, {R. J.} and T. Siegrist and B. Hessen and Krajewski, {J. J.} and Peck, {W. F.} and B. Batlogg and H. Takagi and Waszczak, {J. V.} and Schneemeyer, {L. F.} and Zandbergen, {H. W.}",

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T1 - A new type of homologous series in the La-Cu-O system

AU - Cava, R. J.

AU - Siegrist, T.

AU - Hessen, B.

AU - Krajewski, J. J.

AU - Peck, W. F.

AU - Batlogg, B.

AU - Takagi, H.

AU - Waszczak, J. V.

AU - Schneemeyer, L. F.

AU - Zandbergen, H. W.

PY - 1991/6/15

Y1 - 1991/6/15

N2 - 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.

AB - 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.

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JO - Physica C: Superconductivity and its applications

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IS - 1-3

ER -

A new type of homologous series in the La-Cu-O system

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