Journal
PHYSICA B-CONDENSED MATTER
Volume 558, Issue -, Pages 24-27Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physb.2019.01.029
Keywords
BiFeO3; Thin film; Yb doping; Multiferroic properties; Ferroelectric domain
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Funding
- National Research Foundation of Korea - Korea government [2015R1A2A2A05027951, 2018R1D1A3B07045455]
- National Research Foundation of Korea [2018R1D1A3B07045455] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We investigated the growth characteristics and multiferroic properties of BiFeO3 (BFO) and Yb-doped BiFeO3 (Bi0.85Yb0.15FeO3, YBFO) thin films grown on Pt/Ta/glass substrates. X-ray diffraction experiments showed that both BFO and YBFO thin films had preferentially (111)-oriented polycrystalline structures. Yb doping of BFO thin films led to enhanced multiferroic properties in terms of the ferroelectricity (remanent polarization of about 41.5 mu C/cm(2)) and ferromagnetism (remanent magnetization of about 1.91 emu/cm(3)). According to piezo response force microscopy experiments, the YBFO thin films possessed larger ferroelectric domain structures than the BFO thin films due to the higher domain wall energy of the YBFO thin films.
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