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- Title
The correlation of lattice constant with superexchange interaction in Bi-YIG fabricated by mechanochemical processing.
- Authors
Niyaifar, M.; Ramani; Radhakrishna, M. C.; Hassnpour, A.; Mozaffari, M.; Amighian, J.
- Abstract
Magnetic and structural properties of Bi substituted YIG with nominal formula of Bi x Y3 − x Fe5O12 ( x = 0.0, 0.25, 0.5, 0.75, 1.00) prepared via Mechanochemical Processing (MCP) have been studied with Mossbauer spectroscopy, X-ray diffraction (XRD). The temperature dependence of sublattice magnetic hyperfine field for samples is analyzed. The a–d intersublattice superexchange found to be antiferromagnetic and increases from − 21.97 to − 25.79 kB as Bi increases from 0.0 to 0.25. The a–a and d–d intrasublattice exchanges for sample x = 0.0 are 13.18 and 10.55 kB respectively while for sample x = 0.25 a– a and d– d intrasublattice exchanges are 7.7 and 8.9 kB respectively. The correlation of lattice constant and superexchange interaction are discussed.
- Subjects
MAGNETIC properties; YTTRIUM iron garnet; MOSSBAUER spectroscopy; HYPERFINE interactions; MAGNETIC fields
- Publication
Hyperfine Interactions, 2008, Vol 184, Issue 1-3, p161
- ISSN
0304-3843
- Publication type
Article
- DOI
10.1007/s10751-008-9783-9