TY - JOUR
T1 - Magnetic Field Sensing by Exploiting Giant Nonstrain-Mediated Magnetodielectric Response in Epitaxial Composites
AU - Kang, Min Gyu
AU - Kang, Han Byul
AU - Clavel, Michael
AU - Maurya, Deepam
AU - Gollapudi, Sreenivasulu
AU - Hudait, Mantu
AU - Sanghadasa, Mohan
AU - Priya, Shashank
N1 - Funding Information:
M.G.K. and H.B.K. acknowledge support from the Air Force Office of Scientific Research through grant no. FA9550-14-1-0376 (Ali Sayir). D.M. and S.G. were supported through the Department of Energy, Office of Basic Energy Science grant no. DE-FG02-06ER46290. S.P. acknowledges the support from the Office of Naval Research through the NSF I/UCRC: Center for Energy Harvesting Materials and Systems (CEHMS) membership. M.C. acknowledges support from the National Science Foundation under grant no. ECCS-1507950.
Publisher Copyright:
© 2018 American Chemical Society.
PY - 2018/5/9
Y1 - 2018/5/9
N2 - Heteroepitaxial magnetoelectric (ME) composites are promising for the development of a new generation of multifunctional devices, such as sensors, tunable electronics, and energy harvesters. However, challenge remains in realizing practical epitaxial composite materials, mainly due to the interfacial lattice misfit strain between magnetostrictive and piezoelectric phases and strong substrate clamping that reduces the strain-mediated ME coupling. Here, we demonstrate a nonstrain-mediated ME coupling in PbZr0.52Ti0.48O3 (PZT)/La0.67Sr0.33MnO3 (LSMO) heteroepitaxial composites that resolves these challenges, thereby, providing a giant magnetodielectric (MD) response of ∼27% at 310 K. The factors driving the magnitude of the MD response were found to be the magnetoresistance-coupled dielectric dispersion and piezoelectric strain-mediated modulation of magnetic moment. Building upon this giant MD response, we demonstrate a magnetic field sensor architecture exhibiting a high sensitivity of 54.7 pF/T and desirable linearity with respect to the applied external magnetic field. The demonstrated technique provides a new mechanism for detecting magnetic fields based upon the MD effect.
AB - Heteroepitaxial magnetoelectric (ME) composites are promising for the development of a new generation of multifunctional devices, such as sensors, tunable electronics, and energy harvesters. However, challenge remains in realizing practical epitaxial composite materials, mainly due to the interfacial lattice misfit strain between magnetostrictive and piezoelectric phases and strong substrate clamping that reduces the strain-mediated ME coupling. Here, we demonstrate a nonstrain-mediated ME coupling in PbZr0.52Ti0.48O3 (PZT)/La0.67Sr0.33MnO3 (LSMO) heteroepitaxial composites that resolves these challenges, thereby, providing a giant magnetodielectric (MD) response of ∼27% at 310 K. The factors driving the magnitude of the MD response were found to be the magnetoresistance-coupled dielectric dispersion and piezoelectric strain-mediated modulation of magnetic moment. Building upon this giant MD response, we demonstrate a magnetic field sensor architecture exhibiting a high sensitivity of 54.7 pF/T and desirable linearity with respect to the applied external magnetic field. The demonstrated technique provides a new mechanism for detecting magnetic fields based upon the MD effect.
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U2 - 10.1021/acs.nanolett.7b05248
DO - 10.1021/acs.nanolett.7b05248
M3 - Article
C2 - 29613808
AN - SCOPUS:85046646996
SN - 1530-6984
VL - 18
SP - 2835
EP - 2843
JO - Nano letters
JF - Nano letters
IS - 5
ER -