On the Relation of the ro/ra versus rt/ra Plot with Direct and RKKY Exchanges in the Compounds Containing Chromium
✍ Scribed by Warczewski, J. ;Krok-Kowalski, J. ;Gusin, P. ;Liszkowski, P.
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 96 KB
- Volume
- 189
- Category
- Article
- ISSN
- 0031-8965
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✦ Synopsis
An attempt was made to explain the physical sense of the special r o /r a vs. r t /r a plot being a phase diagram for the variety of chromium compounds, especially spinels, Krok-Kowalski et al., J. Alloys Compd. 315, 62 (2001). Here r t is the ionic radius of cations in the tetrahedral positions, r o the ionic radius of cations in the octahedral positions, r a the ionic radius of anions. Therefore, a model was proposed in which only the direct and RKKY exchanges were taken into account. The predictions of the presented model are adequate to the experimental data contained in this plot.