Giant magnetoelectric coupling and E-field tunability in a laminated Ni2MnGa/lead-magnesium-niobate-lead titanate multiferroic heterostructure
Originally published in Applied Physics Letters 93, 112502 (2008). DOI:10.1063/1.2986480 (http://dx.doi.org/10.1063/1.2986480).
The multiferroic properties of a laminated heterostructure consisting of magnetostrictive Ni2MnGa ribbon and piezoelectric lead-magnesium-niobate-lead titanate crystal are reported. A tunability of the electric field-induced magnetic field was measured by a shift in the ferromagnetic resonance (FMR) field by 230 Oe at X-band while applying an electric field of 6 kV/cm. Concomitantly, a frequency shift in the FMR of 370 MHz was observed. The sensitive tunability stems from a large linear magnetoelectric coupling coefficient, A=41 Oe cm/kV, measured in the heterostructure. This represents a new class of metallic multiferroic heterostructures that operate at microwave frequencies.
Yajie Chen, Jingmin Wang, Ming Liu, Jing Lou, Nian X. Sun, Carmine Vittoria, and Vincent G. Harris. "Giant magnetoelectric coupling and E-field tunability in a laminated Ni2MnGa/lead-magnesium-niobate-lead titanate multiferroic heterostructure" Electrical and Computer Engineering Faculty Publications (2008).
Available at: http://works.bepress.com/ychen/4