Issue 35, 2021

Single domain growth and charge ordering of epitaxial YbFe2O4 films

Abstract

YbFe2O4 is a charge-ordered ferroelectric that exhibits coupling between magnetization and electric polarization near room temperature and crystallizes in a rhombohedral structure (R[3 with combining macron]m). This study presents an attempt to fabricate stoichiometric and epitaxial YbFe2O4−δ films with a nearly single-domain structure using an RF magnetron sputtering method. The (0001)-oriented epitaxial films of YbFe2O4−δ on YSZ (111) substrates via reactive sputtering method exhibited clear three-fold symmetry normal to the substrate without the formation of twin domains rotated by 60°. The oxygen stoichiometry of the epitaxial YbFe2O4−δ was improved by controlling an oxygen partial pressure (PO2) during the deposition. The films showed a sharp ferrimagnetic transition, and the transition temperature (TN) increased linearly to approximately 245 K with decreasing PO2. The magnitude of magnetization of the obtained films was comparable to that of bulk single crystals. Further, the electron diffraction pattern of the stoichiometric films confirmed the presence of three-dimensional charge order, which is consistent with the behavior of the bulk crystals as well.

Graphical abstract: Single domain growth and charge ordering of epitaxial YbFe2O4 films

Supplementary files

Article information

Article type
Paper
Submitted
23 ဇွန် 2021
Accepted
06 ဩ 2021
First published
07 ဩ 2021

CrystEngComm, 2021,23, 6163-6170

Single domain growth and charge ordering of epitaxial YbFe2O4 films

T. Sakagami, R. Ota, J. Kano, N. Ikeda and T. Fujii, CrystEngComm, 2021, 23, 6163 DOI: 10.1039/D1CE00834J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements