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PAC measurements of the Verwey transition in magnetite

✍ Scribed by Z. Inglot; K.P. Lieb; M. Uhrmacher; D. Wiarda; L. Ziegeler

Book ID
110355152
Publisher
Springer
Year
1999
Tongue
English
Weight
71 KB
Volume
120/121
Category
Article
ISSN
0304-3843

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On the Verwey Transition in Magnetite
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## Abstract The Verwey transition in magnetite is investigated using a band model with interatomic Coulomb energy introduced by Cullen and Callen. This model is treated in the Hartree‐Fock approximation. A tight‐binding calculation of the band structure with Verwey ordering yields a gap in the sing

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By combining ab initio results for the electronic structure and phonon spectrum with the group theory, we establish the origin of the Verwey transition in Fe 3 O 4 . Two primary order parameters with X 3 and 5 symmetries are identified. They induce the phase transformation from the high-temperature