Abstract
Epitaxial thin films of BiMnO3 were deposited on single-crystal substrates of (100)-oriented SrTiO3 by pulsed-laser deposition. Structural analysis by x-ray diffraction, electron diffraction, and transmission electron microscopy (TEM) indicated that the films were monoclinic and twinned with two dominant orientation relationships. The first is (111) BiMnO3 ∥ (100) SrTiO3 and ∼[1̄01] BiMnO3 ∥ 〈010〉 SrTiO3; the second is (101̄) BiMnO3 ∥ (100) SrTiO3 and ∼[121] BiMnO3 ∥ 〈010〉 SrTiO3. High-resolution TEM images revealed that there is no reaction or appreciable interdiffusion at the substrate/film interface, despite the high temperature of the substrate during deposition (∼1000 K). Magnetic characterization was carried out (both magnetization versus temperature and hysteresis loops) and the results agree with previous reports of a ferromagnetic transition with TC∼105 K. The actual value of TC in the films is a few degrees lower than the bulk material, the discrepancy being attributed to strain, nonstoichiometry, or size effects.
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Dates
Type | When |
---|---|
Created | 21 years, 7 months ago (Dec. 29, 2003, 6:03 p.m.) |
Deposited | 1 year, 6 months ago (Feb. 3, 2024, 9:09 p.m.) |
Indexed | 3 months, 3 weeks ago (May 2, 2025, 8:11 a.m.) |
Issued | 21 years, 7 months ago (Jan. 5, 2004) |
Published | 21 years, 7 months ago (Jan. 5, 2004) |
Published Print | 21 years, 7 months ago (Jan. 5, 2004) |
@article{Moreira_dos_Santos_2004, title={Epitaxial growth and properties of metastable BiMnO3 thin films}, volume={84}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.1636265}, DOI={10.1063/1.1636265}, number={1}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Moreira dos Santos, António F. and Cheetham, Anthony K. and Tian, Wei and Pan, Xiaoqing and Jia, Yunfa and Murphy, Nathan J. and Lettieri, James and Schlom, Darrell G.}, year={2004}, month=jan, pages={91–93} }