| Autor: |
Britwum, Akyana, Kolodziej, Tomasz, Tokarz, Waldemar, Przewoźnik, Janusz, Kapusta, Czesław, Kąkol, Zbigniew, Kozłowski, Andrzej, Tarnawski, Zbigniew, Honig, Jurgen M. |
| Zdroj: |
Diffusion and Defect Data Part B: Solid State Phenomena; November 2012, Vol. 194 Issue: 1 p120-123, 4p |
| Abstrakt: |
Magnetic field (up to 8T) and temperature (10-300K) dependence of size of Zn doped magnetite samples Fe3-xZnxO4 (x=0.008, 0.022, i.e. falling within first and second order Verwey transition regime) were measured by the strain gauge method. Both samples experienced shrinking on cooling through the Verwey transition along monoclinic c axis, while the strong expansion was found for the 1st order sample in the a-b direction, unlike in the 2nd order sample. Magnetostriction of both samples is very small and limited to low fields only, concomitant with magnetization process. However, field application perpendicular to c axis and at T slightly below the Verwey transition temperature TV results in a large change of dimensions, coinciding with the axis switching process. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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