Microstructure and conduction behavior of BiFeO3 thin film deposited on Ge-doped ZnO

Chinnambedu Murugesan Raghavan, Ji Ya Choi, Sang Su Kim*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

BiFeO3 (BFO) thin films were deposited on a Ge-doped ZnO (GZO)/Si(100) and a Pt(111)/Ti/SiO2/Si(100) using a pulsed laser deposition technique. An improved crystal growth property was observed for the BFO thin film deposited on the GZO/Si(100). The BFO thin film, which was deposited on the (00l) textured GZO/Si(100), exhibited preferred (l00) orientated grains, while randomly orientated grains were observed for the thin film deposited on the Pt(111)/Ti/SiO2/Si(100). When compared with the Pt/BFO/Pt capacitor, the GZO/BFO/GZO capacitor exhibited improved conduction behaviors, such as a low leakage current density and high stability against electrical breakdown. From the J–E curves, conduction of the GZO/BFO/GZO and the Pt/BFO/Pt capacitors was found to be dominated by Ohmic and space charge limited conductions at low and high electric field, respectively.

Original languageEnglish
Article number145
JournalApplied Physics A: Materials Science and Processing
Volume123
Issue number2
DOIs
Publication statusPublished - 6 Feb 2017

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