Abstract
The magnetostriction effect, the change in the mechanical properties of a magnetic material in an external magnetic field, has been studied for possible technological applications such as actuators. We present the fabrication of a multilayered magnetocapacitor containing magnetic layers of Ni0.98Co0.02Fe2O4 (NCFO) and compare it with our prior magnetocapacitor in which CoFe2O4 (CFO) and CoNiFe (CNF) were used as the magnetic layers. In particular, we measured the surface/interface microstructures and the change in the lattice constant of the BaTiO3 (BTO) film in NCFO/BTO/NCFO, CFO/BTO/CFO, and CNF/BTO/CNF multilayered thin films. Our study suggests that there is a correlation exists between the magnetocapacitance and the lattice constant of BTO, which varies with the type of ferromagnetic (FM) material embedded in the magnetic layer.
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Lee, S.N., Shim, IB. Change of the magnetocapacitance ratio in ferromagnetic materials. Journal of the Korean Physical Society 66, 1889–1894 (2015). https://doi.org/10.3938/jkps.66.1889
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DOI: https://doi.org/10.3938/jkps.66.1889