journal article·2017-01-01Open access

Frequency dispersion of flexoelectricity in PMN-PT single crystal

Longlong Shu, Meiqian Wan, Xiaoning Jiang, Fei Li, Naigen Zhou, Wenbin Huang, Tong Wang

AIP Advances· Volume 7· Issue 1

Abstract

The mechanism of the recent discovered enhanced flexoelectricity in perovskites has brought about numerous controversies which still remain unclear. In this paper, we employed relaxor 0.68Pb(Mg2/3Nb1/3)O3 -0.32PbTiO3 (PMN-PT) single crystals for study. The observed flexoelectric coefficient in PMN-PT single crystal reaches up to 100 μC/m, and in a relative low frequency range, exhibits an abnormal frequency dispersion phenomenon with a positive relationship with frequency. Such frequency dispersion regulation is different from the normal relaxation behavior that usually occur a time delay, and hence proves the flexoelectricity acting more like bulk effect rather than surface effect in this kind of materials.
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Research context

OpenAlex topics: Ferroelectric and Piezoelectric Materials · Vibration Control and Rheological Fluids · Multiferroics and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Nanchang University 1 School of Materials Science and Engineering, , Nanchang 330031, China

North Carolina State University 2 Department of Mechanical and Aerospace Engineering, , Raleigh, North Carolina 27695, USA

Pennsylvania State University 3 Materials Research Institute, , University Park, Pennsylvania 16802, USA

Xi’an Jiaotong University 4 Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education and International Center for Dielectric Research, , Xi’an 710049, China

Chongqing University 5 The State Key Lab of Mechanical Transmissions, , Chongqing 400044, China

Shaanxi University of Science and Technology 6 School of Materials Science and Engineering, , Xi’an 710021, China

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