Ordered multiferroic CoFe₂O₄–Pb(Zr_0.52Ti_0.48)O₃coaxial nanotube arrays with enhanced magnetoelectric coupling

Abstract

In this paper, vertically free-standing multiferroic CoFe2O4–Pb(Zr0.52Ti0.48)O3 (CFO–PZT) coaxial nanotube arrays with both good ordering and high density were prepared by a template-assisted sol–gel method.

Specific core-shell approaches and related properties in nanostructured ferroelectric ceramics

“…Meanwhile, in order to favour electromagnetic coupling, core-shell composites made of PbZr0.52Ti0.48O3-CoFe2O4 (PZT-CFO) are very appealing, as PZT with composition near the morphotropic phase boundary (MPB) exhibits excellent FE and piezoelectric properties, whereas CFO displays large magnetocrystalline anisotropy, high coercivity, and moderate saturation magnetization [77]. Most of the a b studies devoted to coaxial PZT-CFO were based on electrospinning of nanofibers [71] and sol-gel deposition of nanowires into AAO pores [78,79]. Past efforts on ME characterization of core-shell nanofibers involving piezoresponse force microscopy (PFM) performed on a single PZT-CFO and BTO-CFO nanofibers showed large ME coefficients of 29.5 and 35 V cm -1 Oe -1 , respectively [71,80].…”

Ferroelectricity and Piezoelectricity of Na0.5Bi0.5TiO3 Nanotube Arrays: Implications for Functional Electronic Devices

“…Tang et al 24 and Ianculescu et al 25 prepared a CoFe 2 O 4 − Pb(Zr 0.52 Ti 0.48 )O 3 composite coaxial nanotube array and a BaTiO 3 doped with 5 mol % Ce 3+ nanotube array using the sol−gel template with the sol-filling process of immersion deposition and the nanotube arrays embedded in the template were obtained after the etching process. They only focus on the magnetoelectric coupling measurement and the characterization of the ferroelectric and piezoelectric properties of a single nanotube.…”