Memory effects of induced magnetic anisotropy

Vechfinskii, V. S.; Solovieva, S. S.; Fedin, V. V.

doi:10.1007/s11182-007-0033-4

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…It is shown that the magnetic anisotropy induced in certain ferrimagnetic materials by thermomagnetic treatment can store information on the temperature of the thermal treatment and the strength of the magnetic field in which it was performed. It is also shown that a ferrimagnetic material can 'memorize' several temperatures and the field strengths of a few magnetic fields (both constant and variable) [6].…”

Section: Introductionmentioning

confidence: 99%

The memory effect of Dy_2.8Sr_0.2Fe₅O₁₂(DySrIG) nanoparticles

Ahmed

Bishay

El-Dek

et al. 2012

Smart Mater. Struct.

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Dy2.8Sr0.2Fe5O12 (DySrIG) was prepared using the citrate–nitrate auto-combustion method. Single phase garnet with cubic structure was obtained at 1100 °C. Thermal hysteresis (heating–cooling) study was performed for the following physical properties: crystal structure using x-ray diffraction (XRD); magnetic susceptibility using Faraday’s method; dielectric measurements including dielectric constant as well as ac conductivity using an LCR meter. The results of the study reveal hysteresis loops in all the parameters which agree with those appearing in differential scanning calorimetry (DSC), and the former were interpreted according to the accompanying changes in the structural characterizations. The study clarifies that the investigated nanoparticles of DySrIG possess an electric memory effect with thermalization, where their dielectric parameters have sensitive changes with temperature in the range 25–400 °C and return to their original values at room temperature again. Accordingly, DySrIG could be recommended in thermal electric sensor applications (thermistors).

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Section: Introductionmentioning

confidence: 99%