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Manzoor, Sadia
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Publications (5/5 displayed)
- 2022SURFACE MICROHARDNESS OF MICROHYBRID AND NANOCOMPOSITE AFTER STORAGE IN MOUTH WASHEScitations
- 2019Reversible electric-field-driven magnetization in a columnar nanocomposite filmcitations
- 2017Giant room temperature magnetoelectric response in strain controlled nanocompositescitations
- 2013Annealing control of magnetic anisotropy and phase separation in CoFe2O4-BaTiO3 nanocomposite filmscitations
- 2013Dependence of magnetoelectric properties on the magnetostrictive content in 0–3 compositescitations
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article
Giant room temperature magnetoelectric response in strain controlled nanocomposites
Abstract
We report giant magnetoelectric coupling at room temperature in a self-assembled nanocomposite of BiFeO3-CoFe2O4 (BFO-CFO) grown on a BaTiO3 (BTO) crystal. The nanocomposite consisting of CFO nanopillars embedded in a BFO matrix exhibits weak perpendicular magnetic anisotropy due to a small out-of-plane compression (∼0.3%) of the magnetostrictive (CFO) phase, enabling magnetization rotation under moderate in-plane compression. Temperature dependent magnetization measurements demonstrate strong magnetoelastic coupling between the BaTiO3 substrate and the nanocomposite film, which has been exploited to produce a large magnetoelectric response in the sample. The reorientation of ferroelectric domains in the BTO crystal upon the application of an electric field (E) alters the strain state of the nanocomposite film, thus enabling control of its magnetic anisotropy. The strain mediated magnetoelectric coupling coefficient α = μ o d M / d E calculated from remnant magnetization at room temperature is 2.6 × 10−...