NDLI: Effect of Substrates on the Structure and Ferroelectric Properties of Multiferroic <formula formulatype=inline> <tex Notation=TeX>${hbox{BiFeO}}

Content Provider	IEEE Xplore Digital Library
Author	Chang, H.W. Yuan, F.T. Tien, S.H. Shen, C.Y. Wang, C.R. Jen, S.U.
Copyright Year	1965
Abstract	Structure and ferroelectric properties of multiferroic BiFeO₃ (BFO) films prepared by pulse laser deposition (PLD) with different substrates of Pt/Ti/SiO₂/Si(100) and Pt/glass have been studied. Isotropic perovskite BFO phase is obtained in the 200-nm-thick BFO films deposited on both substrates at reduced substrate temperature T_s = 400-500°C. Uniformly finer grains and smoother surface are obtained for BFO films grown on Pt(111)/glass as compared to Pt/Ti/SiO₂/Si(100) substrate. This difference may be related to the distinct BFO/Pt interface morphology. After postannealing, the Pt layer grown on glass substrates has very smooth surfaces consisting of (111) grains, while it contains cracks in the Pt/Ti/SiO₂/Si(100). As a result, lower leakage current density and better ferroelectric properties of 2P_r = 15.1-78.6 μC/cm² and E_c = 383-514 kV/cm are obtained in the BFO films deposited on Pt(111)/glass substrates. Nevertheless, high deposition temperature of 550°C leads to the formation of large amount of BFO into Bi₂O₃, Bi₂Fe₄O₉, and Fe₂O₃ phases, and therefore, no ferroelectric behavior is observed.
Sponsorship	IEEE Magnetics Society
Starting Page	1
Ending Page	4
Page Count	4
File Size	2242425
File Format	PDF
ISSN	00189464
Volume Number	50
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Substrates Silicon Glass Surface morphology Bismuth Iron Surface treatment substrate effect Ferroelectric properties multiferroic ${\hbox{BiFeO}}_{3}$ films
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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