Structural phenomena associated with the spin-state transition in
Top Cited Papers
- 10 September 2002
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 66 (9), 094408
- https://doi.org/10.1103/physrevb.66.094408
Abstract
The structural properties of were studied by means of high-resolution neutron powder diffraction in the temperature range Changes of the spin states in this temperature interval are shown to affect not only the unit-cell volume, as previously known, but also internal parameters such as the metal-oxygen bond lengths. These data, as well as the temperature-dependent magnetic susceptibility, can be qualitatively modeled based on a three-state (low-spin, intermediate-spin, and high-spin) activated behavior, but correction terms are required for quantitative agreement. Our fits consistently indicate that the ionic radius of the intermediate-spin state (∼0.56 Å) is smaller than the low-spin/high-spin average (∼0.58 Å). We also present evidence of a third lattice anomaly, occurring around 800 K, which we attribute to the formation of oxygen vacancies.
Keywords
This publication has 24 references indexed in Scilit:
- Two Spin-State Transitions in LaCoO3Journal of the Physics Society Japan, 1998
- LaCoO3 RevisitedJournal of Solid State Chemistry, 1995
- Spin state equilibria and the semiconductor to metal transition of LaCoO3Solid State Communications, 1982
- Low temperature crystallographic and magnetic study of LaCoO3Journal of Physics and Chemistry of Solids, 1967
- First-Order Localized-ElectronCollective-Electron Transition in LaCoPhysical Review B, 1967
- Magnetic and Semiconducting Properties of Perovskites Containing Manganese and CobaltJournal of Applied Physics, 1966
- Interpretation of the Magnetic Properties of LaCoO3Journal of Applied Physics, 1965
- Magnetic and electrical anomalies in LaCoO3Physica, 1964
- An interpretation of the magnetic properties of the perovskite-type mixed crystals La1−xSrxCoO3−λJournal of Physics and Chemistry of Solids, 1958
- Neutron-diffraction study of the magnetic properties of perovskite-like compounds LaBO3Journal of Physics and Chemistry of Solids, 1957