Journal
JOURNAL OF NON-CRYSTALLINE SOLIDS
Volume 456, Issue -, Pages 83-87Publisher
ELSEVIER
DOI: 10.1016/j.jnoncrysol.2016.11.002
Keywords
Amorphous CoFe2O4 film; Magnetic properties; Oxygen vacancy
Funding
- NRF Korea [NRF-2011-0031933, NRF-2015R1D1A1A01058672]
- Korea Basic Science Institute Research Grant [E36800]
- GPF program of NRF [2015H1A2A1034200]
- National Research Council of Science & Technology (NST), Republic of Korea [E36800] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2015H1A2A1034200] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Amorphous CoFe2O4 films with different thicknesses were deposited on MgO(001) substrates to examine the correlation between the oxygen vacancy and magnetic properties of the films. As the film thickness increased, the films became packed and smooth with well-defined interfaces. The magnetic hysteresis loop on the out-of plane and in-plane showed an increased saturation magnetization and decreased coercivity when the film thickness was increased. Furthermore, the number of oxygen vacancies decreased with increasing films thickness. Those observations suggest that the presence of the correlation between the magnetic property variations and number of oxygen vacancies. (C) 2016 Elsevier B.V. All rights reserved.
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