Abstract
Using the Mössbauer effect, values of of have been obtained at each of two sites in several rare-earth iron garnets. The measured values of were compared with values obtained using a point-charge lattice sum calculation. For the octahedral () site there was reasonable agreement between the measured and calculated values of indicating that an ionic model is reasonably valid. However, the measured values of at tetrahedral () sites were larger than those estimated. This difference is attributed to a small amount of covalent bonding which is also evident in the values of the () site internal field and isomer shift.
- Received 28 October 1963
DOI:https://doi.org/10.1103/PhysRev.133.A1568
©1964 American Physical Society