Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/14722
Title: Hydrogen-induced degradation in multiferroic BiFeO3 ceramics
Authors: Shen, ZJ
Chen, WP
Yuan, GL
Liu, JM
Wang, Y 
Chan, HLW 
Keywords: BiFeO3
Degradation
Hydrogen
Multiferroic
Issue Date: 2007
Publisher: North-Holland
Source: Materials letters, 2007, v. 61, no. 22, p. 4354-4357 How to cite?
Journal: Materials letters 
Abstract: Chemical stability of multiferroic BiFeO3 (BFO) ceramics has been studied through electrochemical hydrogen charging, in which BFO ceramic pellets were placed in 0.01 M NaOH solution with hydrogen deposited on their electrodes from the electrolysis of water. The properties of the samples were greatly degraded after the treatment: The leakage current was increased by orders of magnitude, the capacitance and the dielectric loss were dramatically increased in low frequency region. It was proposed that hydrogen entered into BFO lattice and existed at interstitial sites and the degradation was explained by hydrogen's reduction of some Fe3+ to Fe2+ in BFO. Hydrogen-induced degradation occurs relatively easily in BFO and much attention should be paid to it for BFO-based devices.
URI: http://hdl.handle.net/10397/14722
ISSN: 0167-577X
EISSN: 1873-4979
DOI: 10.1016/j.matlet.2007.02.001
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