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, Lynn Schneemeyer, H. W. Zandbergen

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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.

Original languageEnglish
Pages (from-to)115-121
Number of pages7
JournalPhysica C: Superconductivity and its Applications
Volume177
Issue number1-3
DOIs
StatePublished - 15 Jun 1991

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Lanthanum
Exchange coupling
Magnetic susceptibility
lanthanum
Electron microscopy
cuprates
electron microscopy
slabs
Crystal structure
Oxygen
magnetic permeability
Temperature
crystal structure
temperature
Geometry
air
oxygen
synthesis
geometry
Air

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Cava, R. J., Siegrist, T., Hessen, B., Krajewski, J. J., Peck, W. F., Batlogg, B., ... Zandbergen, H. W. (1991). A new type of homologous series in the La-Cu-O system. Physica C: Superconductivity and its Applications, 177(1-3), 115-121. https://doi.org/10.1016/0921-4534(91)90306-J
Cava, R. J. ; Siegrist, T. ; Hessen, B. ; Krajewski, J. J. ; Peck, W. F. ; Batlogg, B. ; Takagi, H. ; Waszczak, J. V. ; Schneemeyer, Lynn ; Zandbergen, H. W. / A new type of homologous series in the La-Cu-O system. In: Physica C: Superconductivity and its Applications. 1991 ; Vol. 177, No. 1-3. pp. 115-121.
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Cava, RJ, Siegrist, T, Hessen, B, Krajewski, JJ, Peck, WF, Batlogg, B, Takagi, H, Waszczak, JV, Schneemeyer, L & Zandbergen, HW 1991, 'A new type of homologous series in the La-Cu-O system', Physica C: Superconductivity and its Applications, vol. 177, no. 1-3, pp. 115-121. https://doi.org/10.1016/0921-4534(91)90306-J

A new type of homologous series in the La-Cu-O system. / Cava, R. J.; Siegrist, T.; Hessen, B.; Krajewski, J. J.; Peck, W. F.; Batlogg, B.; Takagi, H.; Waszczak, J. V.; Schneemeyer, Lynn; Zandbergen, H. W.

In: Physica C: Superconductivity and its Applications, Vol. 177, No. 1-3, 15.06.1991, p. 115-121.

Research output: Contribution to journalArticle

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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, Lynn

AU - Zandbergen, H. W.

PY - 1991/6/15

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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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Cava RJ, Siegrist T, Hessen B, Krajewski JJ, Peck WF, Batlogg B et al. A new type of homologous series in the La-Cu-O system. Physica C: Superconductivity and its Applications. 1991 Jun 15;177(1-3):115-121. https://doi.org/10.1016/0921-4534(91)90306-J