Multiferroic heterostructure fringe field tuning of meander line microstrip ferrite phase shifter

Abstract

Magnetic fringe fields emanating from a multiferroic heterostructure composite of Terfenol-D and lead magnesium niobate-lead titanate were utilized to actively tune a meander line microstrip ferrite phase shifter operating above ferrimagnetic resonance at C-band. Differential phase shifts of 65° were measured when tuned with an applied voltage to the multiferroic heterostructure. This demonstration of magnetoelectric field generation provides an alternative approach to tuning broadband planar microwave magnetic devices where neither strain nor direct electromagnetic coupling is experienced between device and multiferroic transducer.

Correlation between site preference and magnetic properties of substituted strontium ferrite thin films

“…There are several literatures regarding the magnetic and microwave properties of hexagonal ferrite films [4][5][6][7]. Recently, we focused on the preparation of magnetically anisotropic hexagonal ferrite thin films by employing a sol-gel process.…”

Electrical resistance load effect on magnetoelectric coupling of magnetostrictive/piezoelectric laminated composite

“…The effect has attracted much attention in recent years, not only because of the undiscovered science underpinning the effect, but also due to the tremendous application potential for the associated materials and the resulting devices. Since single-phase ME materials are not suitable for industrial applications due to their generally low ME coefficients [2,3], the development of multiple-phase ME composite materials consisting of magnetostrictive and piezoelectric phases based on extrinsic ME coupling has been the main evolutional tend in the recent decade [4][5][6][7][8][9][10][11][12][13].…”

Tunable fringe magnetic fields induced by converse magnetoelectric coupling in a FeGa/PMN-PT multiferroic heterostructure

“…10 Although the static CME effect has been the focus in the past years, investigation of the fringe magnetic fields of a multiferroic heterostructure has been largely overlooked. Recently, the tuning of ferrite phase shifters using the induced magnetic fields of a Terfenol-D/PMN-PT laminated transducer was demonstrated, 11 where the fringe field played the important role of active tuning of the phase shifter while reducing power consumption and increasing switching speed. The Fe-Ga/ PMN-PT laminate heterostructure discussed here has also shown potential for electric field assisted tuning of magnetization and other magnetic parameters.…”