AC magnetic susceptibility under pressure and Mössbauer effect studies of the isotropy point TIP in magnetite

The results of AC magnetic susceptibility measurements of zinc ferrite (Fe3-xZnxO4, x=,0.007,0.017,0.049) single crystalline samples under pressure up to 1.2GPa in the temperature range close to the Verwey transition temperature (TV) are reported. The isotropy point TIP increases with pressure for e...

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Bibliographic Details
Published in:Journal of alloys and compounds 2007-09, Vol.442 (1-2), p.219-221
Main Authors: ZUKROWSKI, J, WIECHEC, A, ZACH, R, TABIS, W, TAMAWSKI, Z, KROL, G, KIM-NGAN, N.-T. H, KAKOL, Z, KOZŁOWSKI, A
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Magnetic resonances and relaxations in condensed matter, mössbauer effect
Magnetically ordered materials: other intrinsic properties
Mössbauer effect
other γ-ray spectroscopy
Physics
Saturation moments and magnetic susceptibilities
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Summary:The results of AC magnetic susceptibility measurements of zinc ferrite (Fe3-xZnxO4, x=,0.007,0.017,0.049) single crystalline samples under pressure up to 1.2GPa in the temperature range close to the Verwey transition temperature (TV) are reported. The isotropy point TIP increases with pressure for each x but the disappearance of primary anisotropy constant at TIP has no effect on Mossbauer spectrum at ambient pressure. Finally, Mossbauer effect data in the vicinity of the Verwey transition does not support the recent claim of the inverse to normal spinel crossover at the transition.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2006.06.113