Abstract
The published structure of La2NiO4+y has unusually short (1.94 ) Ni-O bond lengths. We reexamined the structure of La2NiO4.18 using monochromatic synchrotron x-ray radiation. Rietveld refinement of the structure in space group Bbcm yielded Fourier synthesis (Fobs) maps that suggest a modified structural model for La2NiO4.18. The refined structure contains chemically more reasonable interatomic distances (e.g., shortest Ni-O distance of 2.00 ). A comparison of this structure with that of the superconductor La2CuO4+y reveals disparities in the conduction planes of the two materials that may explain differences in electrical behavior.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 563-571 |
| Number of pages | 9 |
| Journal | Physical Review B |
| Volume | 49 |
| Issue number | 1 |
| DOIs | |
| State | Published - 1994 |
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics