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000061844 084__ $$2WoS$$aNanoscience & Nanotechnology
000061844 084__ $$2WoS$$aMaterials Science, Multidisciplinary
000061844 084__ $$2WoS$$aPhysics, Applied
000061844 1001_ $$0P:(DE-HGF)0$$aBuscaglia, M.T.$$b0
000061844 245__ $$aFerroelectric hollow particles obtained by solid-state reaction
000061844 260__ $$aBristol$$bIOP Publ.$$c2008
000061844 300__ $$a225602
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000061844 440_0 $$04475$$aNanotechnology$$v19$$x0957-4484
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000061844 520__ $$aHollow particles of barium titanate were obtained by a two-step process combining colloidal chemistry and solid-state reaction. BaCO(3) crystals (size ≈1 µm) suspended in a peroxy-Ti(IV) aqueous solution were coated with an amorphous TiO(2) shell using a precipitation process. Calcination of the BaCO(3)@TiO(2) core-shell particles at 700 °C resulted in the formation of BaTiO(3) hollow particles (shell thickness of ≈70 nm) which retain the morphology of the BaCO(3) crystals. Formation of the cavity occurs because out-diffusion of the core phase is much faster than in-diffusion of the shell material. X-ray diffraction (XRD) and Raman spectroscopy indicate that the hollow particles possess a tetragonal ferroelectric structure with axial ratio c/a = 1.005. Piezoresponse force microscopy has shown strong piezoactivity and 180° ferroelectric domains. The process described provides a general route to fabricate hollow ferroelectric structures of several compounds.
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000061844 7001_ $$0P:(DE-HGF)0$$aBuscaglia, V.$$b1
000061844 7001_ $$0P:(DE-HGF)0$$aViviani, M.$$b2
000061844 7001_ $$0P:(DE-HGF)0$$aDondero, G.$$b3
000061844 7001_ $$0P:(DE-Juel1)VDB60095$$aRöhrig, S.$$b4$$uFZJ
000061844 7001_ $$0P:(DE-Juel1)VDB26957$$aRüdiger, A.$$b5$$uFZJ
000061844 7001_ $$0P:(DE-HGF)0$$aNanni, P.$$b6
000061844 773__ $$0PERI:(DE-600)1362365-5$$a10.1088/0957-4484/19/22/225602$$gVol. 19, p. 225602$$p225602$$q19<225602$$tNanotechnology$$v19$$x0957-4484$$y2008
000061844 8567_ $$uhttp://dx.doi.org/10.1088/0957-4484/19/22/225602
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000061844 9201_ $$0I:(DE-Juel1)VDB786$$d31.12.2010$$gIFF$$kIFF-6$$lElektronische Materialien$$x0
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