This research is on the preparation and analysis of composite materials that are capable of converting magnetic fields to electric fields. Such composites consisting of ferrmagnets and ferroelectrics are useful as sensors and signal processing elements

1
Giant Magnetoelectric Effects in
Ferromagnetic-Ferroelectric HeterostructuresG.
Srinivasan, Oakland University (DMR-0302254-
supplements 0443311, 0450757) 
This research is on the preparation and analysis
of composite materials that are capable of
converting magnetic fields to electric fields.
Such composites consisting of ferrmagnets and
ferroelectrics are useful as sensors and signal
processing elements in consumer electronics and
radar systems. The focus during the third year
was on composites of ferromagnetic alloys and
ferroelectrics. Studies revealed very high field
conversion efficiency in layered and
nano-composites and the potential for use as
magnetic field and microwave sensors (Figs.1,2) .

Fig.1 Data showing ultrahigh magnetoelectric
coupling in a Co-Fe alloy/PZT trilayer. Such
elements are useful as magnetic field sensors.
ME Coeff. (mV/cm Oe)
Phys. Rev. B 71, 184423 (2005) Phys. Rev. B 72,
060408(R) (2005) Appl. Phys. Lett. 87, 222507
(2005)
Field (kOe)
Fig.2 Giant ME effect in Ni-PZT.
2
Giant Magnetoelectric Effects in
Ferromagnetic-Ferroelectric HeterostructuresG.
Srinivasan, Oakland University (DMR-0302254-
supplements 0443311, 0450757) 
Broader Impacts
Education and Research training 5 High school
junior/seniors, 2 Undergraduates, 4 Graduate
students and 2 Research associates. Summer
research training for a graduate student in
St.Petersburg, Russia (supported by a
supplement). Publications and Presentations
2005-06 Journal Publications18 Undergraduate
coauthored publications 5 Conference
Presentations 18
Out-reach Five high school seniors spent the
summer of 2005 and 2006 in our group. They
successfully completed their projects on ME
sensors. Reports were submitted for
International Baccalaureate (IB) program and
reports for Intel Science Talent Search
competitions. The 2005-team was a state
semifinalist in the Siemens competition. Sensors
and Signal Processing Devices Novel field
sensors and signal processing devices have been
designed. 3 patents have been filed (one
granted).