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Fabrication and Characterization of Multiferroic Al0.5Fe1.5O3 Epitaxial Thin Films
Published online by Cambridge University Press: 19 February 2019
Abstract
Single-phase multiferroic materials have attracted considerable attention among scientists, due to the strong drive in industry towards device miniaturization, addition of new functionalities, etc. Currently, most of the discovered materials have at-least one ferroic order active only at low temperatures, thereby hindering their induction into practical devices. κ-Al2O3-type AlxFe2-xO3 (x-AFO) oxides belong to a new class of metastable multiferroic compounds (space group: Pna21), with relatively high Curie temperatures. The current work investigates the effect of thin film deposition conditions on the ferroelectric and ferrimagnetic properties of Al0.5Fe1.5O3 (0.5-AFO). Substrate temperature and oxygen partial pressure during deposition were found to be the critical parameters in obtaining high quality films. Optimizing the deposition conditions of 0.5-AFO enabled observation of both ferroelectricity and ferrimagnetism at room temperature.
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- Information
- MRS Advances , Volume 4 , Issue 9: Electronic, Photonic and Magnetic Materials , 2019 , pp. 539 - 544
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- Copyright © Materials Research Society 2019