Multiferroic thin film composite of Pb(Zr0.95Ti 0.05)O3/CoFe2O4 on Si and SrTiO 3 substrates

Abstract

Thin layers of Pb(Zr0.95Ti0.05)O3/Co ferrite (CFO) were deposited on Si(100)/SiO2/Ti/Pt(111) and SrTiO3(001) substrates using pulsed laser deposition technique. The phase and structural evolutions of the composites were characterized using X-ray diffractometry and transmission electron microscope. The magnetic and electric properties of the samples were evaluated by the hysteresis loop measurement systems. The results showed that the double layer of Pb(Zr0.95Ti 0.05)O3/CFO coating on SrTiO3 substrate, exhibited a clear magnetic hysteresis loop as well as a saturated polarization. Magnetoelectric coefficient of this sample (αE) reaches to 244 × 10- 3 V/A (194 mV/cm Oe). Thin layer of Pb(Zr 0.95Ti0.05)O3/CFO on Si(100)/SiO 2/Ti/Pt(111) substrate was polycrystalline without texture and its maximum magnetoelectric coefficient was 167 × 10- 3 V/A. © 2013 Elsevier B.V.