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Journal of Applied Physics / Volume 107 / Issue 9 / PROCEEDINGS OF THE 11TH JOINT MMM-INTERMAG CONFERENCE, WASHINGTON, DC, 2010 / Multiferroics

J. Appl. Phys. 107, 09D908 (2010); http://dx.doi.org/10.1063/1.3360354 (3 pages)

Lanthanum doped multiferroic DyFeO3: Structural and magnetic properties

Y. Du, Z. X. Cheng, X. L. Wang, and S. X. Dou

Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, New South Wales 2522, Australia

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(Received 29 October 2009; accepted 15 December 2009; published online 3 May 2010)

Lanthanum doped multiferroic DyFeO3 was synthesized by solid state reaction. X-ray diffraction and refinement show that the lattice parameters of Dy1−xLaxFeO3 increase linearly with the La content. Raman spectroscopy reveals that the short-range force constant in Dy1−xLaxFeO3 is decreased by La3+ ion substitution. The spin reorientation phase transition temperature (TSRPT) is observed to decrease along with the doping level. The antiferromagnetic ordering temperature TN of Fe3+ ions is depressed with increasing doping level. Both decreasing TSRPT and decreasing TN indicate that Fe–Dy and Fe–Fe interactions are weakened by La substitution. It is found that the electron configuration of Fe3+ is high spin state and not affected by the La doping in all the samples above TN.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

antiferromagnetic materials, doping profiles, dysprosium compounds, ferroelectric materials, ferromagnetic materials, lanthanum compounds, lattice constants, lattice dynamics, multiferroics, Neel temperature, Raman spectra, spin dynamics, X-ray diffraction

PACS

  • 61.66.Fn

    Inorganic compounds

  • 75.85.+t

    Magnetoelectric effects, multiferroics

  • 75.50.Ee

    Antiferromagnetics

  • 75.30.Kz

    Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)

  • 75.40.Gb

    Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.)

  • 61.72.up

    Other materials

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3360354

PUBLICATION DATA

ISSN

0021-8979 (print)  
1089-7550 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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    References

    Z. X. Cheng, A. H. Li, X. L. Wang, S. X. Dou, K. Ozawa, H. Kimura, S. J. Zhang, and T. R. Shrout, J. Appl. Phys. 103, 07E507 (2008)JAPIAU00010300000707E507000001.

    C. J. Fennie, Phys. Rev. Lett. 100, 167203 (2008).

    Y. Tokunaga, S. Iguchi, T. Arima, and Y. Tokura, Phys. Rev. Lett. 101, 097205 (2008).

    S. Venugopalan, M. Dutta, A. K. Ramdas, and J. P. Remeika, Phys. Rev. B 31, 1490 (1985).

    R. L. White, J. Appl. Phys. 40, 1061 (1969)JAPIAU000040000003001061000001.


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