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J. Krippel, A. Muhammad, R. Grössinger, W. Linert, F. Kubel:
"Magnetoelectric characterization of wet chemically synthesized CoFe2O4-Pb(ZrTi)O4 composites by means of a pulsed field method";
Poster: EIC 2011: An International Student Research Conference, New York; 13.04.2011 - 15.04.2011; in: "2011 Einsteins in the City", (2011), S. C.6.

The magnetoelectric effect (ME) in its most general definition describes a coupling between magnetic and electric fields in matter. Although originally pointed out by P. Curie over a century ago it experienced a huge renaissance in recent years [1] due to a wide variety of possible applications ranging from magnetoelectric transducers, spintronics and sensor technology, to novel memory devices performing read and/or write operations magnetically and electrically. Whereas single phased multiferroic materials such as BiFeO3 are of great theoretical interest, composites however offer several advantages concerning application [2]. Magnetoelectric composites of magnetostrictive CoFe2O4 and piezoelectric Pb(ZrTi)O3 (PZT) have been synthesized via a modified chemical sol-gel combustion route [3]. The magnetoelectric effect was measured using a charge amplifier collecting the charge generated by the expansion of the composite material in response to a magnetic pulse field. This direct measurement of the exhibited charge provides a more accurate determination of the ME coefficient in opposition to the commonly used Lock-In technique.

magnetostriction; magnetoelectric effect; compound materials