Magnetoelectric effect in piezoelectric-magnetostrictive composites

Thesis/Dissertation · Tue Jan 01 04:00:00 EST 1991

OSTI ID:6976729

Harshe, G R

The product property of magnetoelectricity, observed was studied in composites of BaTiO[sub 3] or PZT and CoFe[sub 2]O[sub 4]. An experimental setup was constructed to measure the magnetically induced magnetoelectric effect. Magnetostrictive properties of CoFe[sub 2]O[sub 4] were observed. The hysteresis in magnetostriction was very small, which increases the useful range of the magnetic field in applications. The piezoelectric properties were much better and hence the magnetoelectric effect in multilayer samples was much larger than in ball mill mixed composites because of better poling. The magnetoelectric voltage coefficient in the multilayer composites was larger than those in the composites prepared by ball-mill mixing. The maximum values were 92.8 (V/m)/(kA/m) for the tape-cast cofired CoFe[sub 2]O[sub 4]-PZT4 composites and 9.55 (V/m)/(kA/m) for CoFe[sub 2]O[sub 4]-BaTiO[sub 3] (20:80 mole % ratio) ball-mill-mixed composites. Theoretical models were developed to calculate the magnetoelectric voltage coefficient of 2-2 composites with different boundary conditions.

• Research Organization: Pennsylvania State Univ., University Park, PA (United States)
• OSTI ID: 6976729
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360606* -- Other Materials-- Physical Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
COBALT COMPOUNDS
COMPOSITE MATERIALS
ELECTRICAL PROPERTIES
FERRATES
IRON COMPOUNDS
LEAD COMPOUNDS
MAGNETIC PROPERTIES
MAGNETOSTRICTION
MATERIALS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PZT
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONATES
ZIRCONIUM COMPOUNDS