Room-temperature surface multiferroicity in Y$_2$NiMnO$_6$ nanorods
Shubhankar Mishra,
Amritendu Roy,
Aditi Sahoo
et al.
Abstract:We report observation of surface-defect-induced room temperature multiferroicity -surface ferromagnetism (MS at 50 kOe ∼0.005 emu/g), ferroelectricity (PR ∼2 nC/cm 2 ), and significantly large magnetoelectric coupling (decrease in PR by ∼80% under ∼15 kOe field) -in nanorods (diameter ∼100 nm) of double perovskite Y2NiMnO6 compound. In bulk form, this system exhibits multiferroicity only below its magnetic transition temperature TN ≈ 70 K. On the other hand, the oxygen vacancies, formed at the surface region (… Show more
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