Abstract
Interactions between a ferromagnet, cobalt, and a ferroelectric copolymer, poly(vinylidene fluoride with trifluoroethylene) in thin film heterostructures result in a 5% change in the ferroelectric polarization on application of a perpendicular 6 kG magnetic field corresponding to a magnetoelectric coupling coefficient of α=5.45 V/cm Oe. The effect disappears on magnetic saturation, ruling out conventional strain coupling. A simple model posits that the ferroelectric film develops in-plane strain gradients, a consequence of the coupling to strain gradients present at the domain walls in the multidomain Co layer, resulting in the measured polarization change via the flexoelectric effect.
| Original language | English |
|---|---|
| Article number | 112904 |
| Journal | Applied Physics Letters |
| Volume | 97 |
| Issue number | 11 |
| DOIs | |
| State | Published - Sep 13 2010 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
Cite this
Magnetoelectric effects in ferromagnetic cobalt/ferroelectric copolymer multilayer films. / Mardana, A.; Bai, Mengjun; Baruth, Andrew; Ducharme, Stephen; Adenwalla, S.
In: Applied Physics Letters, Vol. 97, No. 11, 112904, 13.09.2010.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Magnetoelectric effects in ferromagnetic cobalt/ferroelectric copolymer multilayer films
AU - Mardana, A.
AU - Bai, Mengjun
AU - Baruth, Andrew
AU - Ducharme, Stephen
AU - Adenwalla, S.
PY - 2010/9/13
Y1 - 2010/9/13
N2 - Interactions between a ferromagnet, cobalt, and a ferroelectric copolymer, poly(vinylidene fluoride with trifluoroethylene) in thin film heterostructures result in a 5% change in the ferroelectric polarization on application of a perpendicular 6 kG magnetic field corresponding to a magnetoelectric coupling coefficient of α=5.45 V/cm Oe. The effect disappears on magnetic saturation, ruling out conventional strain coupling. A simple model posits that the ferroelectric film develops in-plane strain gradients, a consequence of the coupling to strain gradients present at the domain walls in the multidomain Co layer, resulting in the measured polarization change via the flexoelectric effect.
AB - Interactions between a ferromagnet, cobalt, and a ferroelectric copolymer, poly(vinylidene fluoride with trifluoroethylene) in thin film heterostructures result in a 5% change in the ferroelectric polarization on application of a perpendicular 6 kG magnetic field corresponding to a magnetoelectric coupling coefficient of α=5.45 V/cm Oe. The effect disappears on magnetic saturation, ruling out conventional strain coupling. A simple model posits that the ferroelectric film develops in-plane strain gradients, a consequence of the coupling to strain gradients present at the domain walls in the multidomain Co layer, resulting in the measured polarization change via the flexoelectric effect.
UR - http://www.scopus.com/inward/record.url?scp=77956815438&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77956815438&partnerID=8YFLogxK
U2 - 10.1063/1.3488814
DO - 10.1063/1.3488814
M3 - Article
AN - SCOPUS:77956815438
VL - 97
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 11
M1 - 112904
ER -