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Issue 54, 2015
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Influence of Mn dopants on the structure and multiferroic properties of a Bi0.90Ho0.10FeO3 thin film

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Abstract

Mn substituted Bi0.90Ho0.10FeO3 (BHFO) thin films having the compositions Bi0.90Ho0.10Fe1−xMnxO3 (BHFMO) (x = 0, 0.01, 0.03, 0.05) were synthesized via chemical solution deposition. The influence of the Mn dopants on the structure and multiferroic properties of the Bi0.90Ho0.10FeO3 thin film is systematically investigated. X-ray diffraction, Rietveld refinement and Raman spectra analysis reveal that the crystal structure of the BHFMO thin film is rhombohedral (R3c:H + R[3 with combining macron]m:R). More importantly, the percentage of the space groups R3c:H and R[3 with combining macron]m:R is changed with the substitution of Mn into the Fe-site in the BHFO thin film, which indicates the presence of a structural transition in BHFMO. (X-ray photoelectron spectroscopy) XPS analysis confirms that (Ho, Mn) co-doping decreases the oxygen vacancy concentration, showing less Fe2+ ions in the co-doped BHFMO thin films compared with the BHFO thin film. The leakage current of the BHFMOx=0.01 thin film is 5.398 × 10−4 A cm−2 at 400 kV cm−1, which is reduced effectively compared with BHFO (2.63 × 10−3 A cm−2). Well saturated hysteresis loops with a large remanent polarization of ∼80 μC cm−2 in the BHFMOx=0.01 thin film is observed, due to the reduced leakage current and the structural transition. The BHFMOx=0.01 thin film also shows enhanced ferromagnetism with saturated magnetization (Ms = 5.24 emu cm−3) due to the destruction of the antiferromagnetically ordered spins arising from a structural transition.

Graphical abstract: Influence of Mn dopants on the structure and multiferroic properties of a Bi0.90Ho0.10FeO3 thin film

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Publication details

The article was received on 12 Jan 2015, accepted on 05 May 2015 and first published on 06 May 2015


Article type: Paper
DOI: 10.1039/C5RA00609K
Citation: RSC Adv., 2015,5, 43594-43600
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    Influence of Mn dopants on the structure and multiferroic properties of a Bi0.90Ho0.10FeO3 thin film

    W. Ye, G. Tan, X. Yan, H. Ren and A. Xia, RSC Adv., 2015, 5, 43594
    DOI: 10.1039/C5RA00609K

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