Structural and magnetic properties of la Mn1-x Fex O3 (0<x<1.0)

X. D. Zhou, L. R. Pederson, Q. Cai, J. Yang, B. J. Scarfino, M. Kim, W. B. Yelon, W. J. James, H. U. Anderson, C. Wang

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Electronic, structural, and magnetic properties of Mn-doped lanthanum ferrites were studied by neutron diffraction, superconducting quantum interference device, and impedance spectroscopy. Neutron diffraction refinements were performed with the constraint of full La occupancy, which showed the presence of excess oxygen when x<0.4. Mixed valent Mn cations and cation vacancies, therefore, exist in all the samples. The samples with x>0.7 are magnetically ordered at room temperature with orthorhombic symmetry (Pbnm). When x<0.3 the structure is rhombohedral and magnetically disordered above 16 K. The majority carriers, electron holes, correspond to high oxidation states of Mn. The carrier concentration is determined from the Seebeck coefficients, and is a function of temperature and Fe concentration. The measurements of conductivity and Seebeck coefficients show polaron hopping at elevated temperatures.

Original languageEnglish
Article number08M918
JournalJournal of Applied Physics
Volume99
Issue number8
DOIs
Publication statusPublished - 2006
Externally publishedYes

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Seebeck effect
neutron diffraction
magnetic properties
majority carriers
lanthanum
ferrites
impedance
interference
conductivity
oxidation
temperature
symmetry
room temperature
oxygen
coefficients
electronics
spectroscopy

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Cite this

Zhou, X. D., Pederson, L. R., Cai, Q., Yang, J., Scarfino, B. J., Kim, M., ... Wang, C. (2006). Structural and magnetic properties of la Mn1-x Fex O3 (0<x<1.0). Journal of Applied Physics, 99(8), [08M918]. https://doi.org/10.1063/1.2176389

Structural and magnetic properties of la Mn1-x Fex O3 (0<x<1.0). / Zhou, X. D.; Pederson, L. R.; Cai, Q.; Yang, J.; Scarfino, B. J.; Kim, M.; Yelon, W. B.; James, W. J.; Anderson, H. U.; Wang, C.

In: Journal of Applied Physics, Vol. 99, No. 8, 08M918, 2006.

Research output: Contribution to journalArticle

Zhou, XD, Pederson, LR, Cai, Q, Yang, J, Scarfino, BJ, Kim, M, Yelon, WB, James, WJ, Anderson, HU & Wang, C 2006, 'Structural and magnetic properties of la Mn1-x Fex O3 (0<x<1.0)', Journal of Applied Physics, vol. 99, no. 8, 08M918. https://doi.org/10.1063/1.2176389
Zhou XD, Pederson LR, Cai Q, Yang J, Scarfino BJ, Kim M et al. Structural and magnetic properties of la Mn1-x Fex O3 (0<x<1.0). Journal of Applied Physics. 2006;99(8). 08M918. https://doi.org/10.1063/1.2176389
Zhou, X. D. ; Pederson, L. R. ; Cai, Q. ; Yang, J. ; Scarfino, B. J. ; Kim, M. ; Yelon, W. B. ; James, W. J. ; Anderson, H. U. ; Wang, C. / Structural and magnetic properties of la Mn1-x Fex O3 (0<x<1.0). In: Journal of Applied Physics. 2006 ; Vol. 99, No. 8.
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AU - Pederson, L. R.

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