Repository logo
 

Ferroelectric Sm-doped BiMnO3 thin films with ferromagnetic transition temperature enhanced to 140 K.


Type

Article

Change log

Authors

Choi, Eun-Mi 
Kursumovic, Ahmed 
Lee, Oon Jew 
Kleibeuker, Josée E 
Chen, Aiping 

Abstract

A combined chemical pressure and substrate biaxial pressure crystal engineering approach was demonstrated for producing highly epitaxial Sm-doped BiMnO(3) (BSMO) films on SrTiO(3) single crystal substrates, with enhanced magnetic transition temperatures, TC up to as high as 140 K, 40 K higher than that for standard BiMnO(3) (BMO) films. Strong room temperature ferroelectricity with piezoresponse amplitude, d(33) = 10 pm/V, and long-term retention of polarization were also observed. Furthermore, the BSMO films were much easier to grow than pure BMO films, with excellent phase purity over a wide growth window. The work represents a very effective way to independently control strain in-plane and out-of-plane, which is important not just for BMO but for controlling the properties of many other strongly correlated oxides.

Description

Keywords

BiMnO3, PLD, film, multiferroic

Journal Title

ACS Appl Mater Interfaces

Conference Name

Journal ISSN

1944-8244
1944-8252

Volume Title

6

Publisher

American Chemical Society (ACS)
Sponsorship
Engineering and Physical Sciences Research Council (EP/H047867/1)
Engineering and Physical Sciences Research Council (EP/L011700/1)
European Research Council (247276)
This research was funded by the Engineering and Physical Sciences Research Council, (EP/P50385X/1), the European Research Council (ERC-2009-AdG 247276 NOVOX). The TEM work at Texas A&M University was funded by the U.S. National Science Foundation (NSF-1007969).