Abstract: One dimensional single-crystal multiferroic composites consisting of PbZrxTi1-xO3 (PZT) nanofibers and CoFe2O4 (CFO) nanodots were prepared by a facile in-situ solid state sintering method, in which pre-perovskite Zr-doped PbTiO3 nanofibers and commercial CFO nanodots were used as precursors. X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) analyses demonstrated that the PZT-CFO single-crystal multiferroic composites were composed of nanofibers and nanodots. The detailed structural characterizations by transmission electron microscopy (TEM) demonstrated an epitaxial growth relation between PZT nanofibers and CFO nanodots. Ferromagnetism of the nanofiber composites were investigated by vibrating sample magnetometer (VSM), which found PZT-CFO nanocomposites had typical magnetic field hysteresis loops at room temperature. Moreover, the remanent magnetization (Mr) and coercive field (Hc) value increased with the Zr doping concentration.
1 Eerenstein W, Mathur N D, Scott J F. Multiferroic and magnetoelectric materials[J]. Nature, 2006,442:759. 2 Rocquefelte X, Schwarz K, Blaha P, et al. Room-temperature spin-spiral multiferroicity in high-pressure cupric oxide[J]. Nat Commun,2013,4:2511. 3 Nan C W, Bichurin M I, Dong S X, et al. Multiferroic magnetoelectric composites: Historical perspective, status, and future directions[J]. J Appl Phys,2008,103:031101. 4 Wang W P, Yang H, Xian T, et al. Observation of abnormal magnetoelectric behavior in 0-3 type CoFe2O4-BaTiO3 nanocomposites[J]. Chem Phys Lett,2015,618:72. 5 Zheng H, Wang J, Lofland S E, et al. Multiferroic BaTiO3-CoFe2O4 nanostructures[J]. Science,2004,303:661. 6 Liu B, Sun T, He J Q, et al. Sol-gel-derived epitaxial nanocompo-site thin films with large sharp magnetoelectric effect[J]. ACS Nano,2010,4:6836. 7 Lu X L, Kim Y, Goetze S, et al. Magnetoelectric coupling in ordered arrays of multilayered heteroepitaxial BaTiO3/CoFe2O4 na-nodots[J]. Nano Lett,2011,11:3202. 8 Ma J, et al. Recent progress in multiferroic magnetoelectric compo-sites: From bulk to thin films[J]. Adv Mater,2011,23:1062. 9 Sreenivasulu G, Qu H, Srinivasan G. Multiferroic oxide composites: Synthesis, characterisation and applications[J]. Mater Sci Technol,2014,30:1625. 10 Cai R, Antohe V A, Hu Z, et al. Multiferroic nanopatterned hybrid material with room-temperature magnetic switching of the electric polarization[J]. Adv Mater,2017, 29:1604604. 11 Hua Z H, Li D, Fu H. Sol-gel template synthesis and characterization of magnetoelectric CoFe2O4/BaTiO3 nanotubes[J]. Acta Physico-Chim Sinica,2009,25:145. 12 Raidongia K, Nag A, Sundaresan A, et al. Multiferroic and magnetoelectric properties of core-shell CoFe2O4@BaTiO3 nanocomposites[J]. Appl Phys Lett,2010,97:062904. 13 Xie S H, Ma F Y, Liu Y M, et al. Multiferroic CoFe2O4-Pb(Zr0.52-Ti0.48)O3 core-shell nanofibers and their magnetoelectric coupling[J]. Nanoscale,2011,3:3152. 14 Ren Z H, Xiao Z, Yin S M, et al. Preparation and characterization of single-crystal multiferroic nanofiber composites[J]. J Alloys Compd,2013,552:518. 15 Takasu H. The ferroelectric memory and its applications[J]. J Electroceram,2000,4:327. 16 Deng H, Qiu Y C, Yang S H. General surfactant-free synthesis of MTiO3 (M = Ba, Sr, Pb) perovskite nanostrips[J]. J Mater Chem,2009,19:976. 17 Naumov I I, Fu H X. Spontaneous polarization in one-dimensional Pb(ZrTi)O3 nanowires[J]. Phys Rev Lett,2005,95:247602. 18 Manova E, Kunev B, Paneva D, et al. Mechano-synthesis, characterization, and magnetic properties of nanoparticles of cobalt ferrite, CoFe2O4[J]. Chem Mater,2004,16:5689. 19 Xiao Z, Ren Z H, et al. Single-crystal nanofibers of Zr-doped new structured PbTiO3: Hydrothermal synthesis, characte-rization and phase transformation[J]. J Mater Chem,2011,21: 3562. 20 Mathieu A, Lotfi Ben T, Frédéric H, et al. Size-dependent magnetic properties of CoFe2O4 nanoparticles prepared in polyol[J]. J Phys: Condensed Matter,2011,23:506001. 21 Singh S. Munjal S, Khare N. Strain/defect induced enhanced coercivity in single domain CoFe2O4 nanoparticles[J].J Magn Magn Mater,2015,386:69. 22 Xie Shuhong. Fabrication and characterization of nanostructured multiferroic materials [D]. Xiangtan: Xiangtan University, 2008(in Chinese). 谢淑红.多重铁性微纳米材料的制备与表征[D].湘潭:湘潭大学,2008.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2017, Vol. 31 
