Abstract
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.
Original language | English (US) |
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Pages (from-to) | 170-184 |
Number of pages | 15 |
Journal | Journal of Solid State Chemistry |
Volume | 94 |
Issue number | 1 |
DOIs | |
State | Published - Sep 1991 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry