Abstract
We report a novel epitaxial growth of EuTiO3 films on SrTiO3(001) substrate by hydrothermal method. The morphological, structural, chemical, and magnetic properties of these epitaxial EuTiO3 films were examined by scanning electron microscopy, transmission electron microscopy, high-resolution X-ray diffractometry, X-ray photoelectron spectroscopy, and superconducting quantum interference device magnetometry, respectively. As-grown EuTiO3 films with a perovskite structure were found to show an out-of-plane lattice shrinkage and room-temperature ferromagnetism, possibly resulting from an existence of Eu3+. Postannealing at 1,000°C could reduce the amount of Eu3+, relax the out-of-plane lattice shrinkage, and impact the magnetic properties of the films.PACS81.10.Aj; 81.15.-z; 61.05.-a
Highlights
Interest in multiferroics has been recently revived, since coexistence and interactions of ferroelectric, ferromagnetic, and ferroelastic orderings in multiferroics [1,2,3,4,5,6] could be applied potentially to a range of novel multifunctional devices [6,7]
We find that the as-grown epitaxial EuTiO3 films show an out-of-plane lattice shrinkage and room-temperature ferromagnetism
The crosses and the micron-sized tetragon develop regularly and orient highly, which reveals that the films are highly oriented and suggests a tetragonal structure of the film. This indication is evidenced by the following transmission electron microscopy (TEM) and high-resolution X-ray diffractometry (HRXRD) results
Summary
Interest in multiferroics has been recently revived, since coexistence and interactions of ferroelectric, ferromagnetic, and ferroelastic orderings in multiferroics [1,2,3,4,5,6] could be applied potentially to a range of novel multifunctional devices [6,7]. A variety of techniques are available to grow fine epitaxial perovskite films, such as pulsed laser deposition [11], molecular beam epitaxy [12], radio-frequency magnetron sputtering [14], and metal-organic chemical vapor deposition [15]. These methods share a common feature that high growth temperatures (> 500°C) and costly equipments are usually necessary.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
