A NEW HOMOLOGOUS SERIES OF LANTHANUM COPPER OXIDES

被引：55

作者：

CAVA, RJ ^{[1
]}

SIEGRIST, T ^{[1
]}

HESSEN, B ^{[1
]}

KRAJEWSKI, JJ ^{[1
]}

PECK, WF ^{[1
]}

BATLOGG, B ^{[1
]}

TAKAGI, H ^{[1
]}

WASZCZAK, JV ^{[1
]}

SCHNEEMEYER, LF ^{[1
]}

ZANDBERGEN, HW ^{[1
]}

机构：

[1] DELFT UNIV TECHNOL,NATL CTR HIGH RESOLUT ELECTRON MICROSCOPY,DELFT,NETHERLANDS

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1991年 / 94卷 / 01期

关键词：

D O I：

10.1016/0022-4596(91)90230-F

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

We report the synthesis and structural characterization of a new homologous series of lanthanum cuprates, with the formula La4+4nCu8+2nO14+8n. The n = 2 and n = 3 members, La2Cu2O5 and La8Cu7O19, synthesized in the bulk, are stable in very narrow temperature ranges in air and oxygen. The n = 4 member was observed by electron microscopy. The crystal structure of La2Cu2O5 consists of thin ribbons 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 low exchange coupling energy. © 1991.

引用

页码：170 / 184

页数：15

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