Ordered multiferroic CoFe2O4–Pb(Zr0.52Ti0.48)O3 coaxial nanotube arrays with enhanced magnetoelectric coupling

Dan Tang; Zhiqiang Zeng; Qingwei Zhou; Shaoqiang Su; Die Hu; Peilian Li; Xiaozi Lin; Xingsen Gao; Xubing Lu; Xin Wang; Mingliang Jin; Guofu Zhou; Zhang Zhang; Junming Liu

doi:10.1039/C7RA04183G

Ordered multiferroic CoFe₂O₄–Pb(Zr_0.52Ti_0.48)O₃ coaxial nanotube arrays with enhanced magnetoelectric coupling

Dan Tang,

^a Zhiqiang Zeng,^a Qingwei Zhou,^d Shaoqiang Su,^a Die Hu,^a Peilian Li,^a Xiaozi Lin,^a Xingsen Gao,

^a Xubing Lu,^a Xin Wang,^bc Mingliang Jin,^bc Guofu Zhou,^bc Zhang Zhang*^ac and Junming Liu^ad

Author affiliations

* Corresponding authors

^a Institute for Advanced Materials, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, People's Republic of China
E-mail: zzhang@scnu.edu.cn

^b Institute of Electronic Paper Display, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, People's Republic of China

^c International Academy of Optoelectronics at Zhaoqing, South China Normal University, Zhaoqing, Guangdong Province, China

^d Laboratory of Solid State Microstructures, Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, People's Republic of China

Abstract

In this paper, vertically free-standing multiferroic CoFe₂O₄–Pb(Zr_0.52Ti_0.48)O₃ (CFO–PZT) coaxial nanotube arrays with both good ordering and high density were prepared by a template-assisted sol–gel method. X-ray diffraction (XRD) and Raman spectra confirmed that the as-prepared CFO–PZT nanotubes (NTs) included both spinel CFO and perovskite PZT phases. The multiferroic properties were demonstrated by magnetic hysteresis and piezo-response force microscopy (PFM). We also observed an effective dielectric constant of about 0.8% between increasing and decreasing magnetic field, indicating that the ordered CFO–PZT coaxial nanotube arrays may enable potential high-density magnetoelectric (ME) devices.

RSC Advances

Ordered multiferroic CoFe₂O₄–Pb(Zr_0.52Ti_0.48)O₃ coaxial nanotube arrays with enhanced magnetoelectric coupling

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Ordered multiferroic CoFe₂O₄–Pb(Zr_0.52Ti_0.48)O₃ coaxial nanotube arrays with enhanced magnetoelectric coupling

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