Tunable dielectric properties in Mn-doped LuFe 2O 4 system

Ying Hou, Yiping Yao, Sining Dong, Xi Huang, Xuefeng Sun, Xiaoguang Li

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The dielectric properties and tunability with external magnetic and electric fields for LuFe 2-xMn xO 4 (0 ≤ x ≤ 1) are systematically studied. It was found that the dielectric loss, the ferrimagnetic Curie temperature, and the conductivity reduce with increasing Mn doping. One of the most important results is that the room temperature dielectric tunability with low magnetic and electric fields can be achieved in these samples. The analysis demonstrates that the electron transfer between Fe 2+ and Fe 3+ is efficiently suppressed with Mn doping and thus results in the decreases of the leaky conductivity and the dielectric loss. Furthermore, from the studies on the combination of impedance and modulus complex planes for the samples with different electrodes, the tunability is found to be more closely related to the extrinsic effect than the intrinsic bulk effect.

Original languageEnglish (US)
Pages (from-to)922-927
Number of pages6
JournalJournal of Materials Research
Volume27
Issue number6
DOIs
StatePublished - Mar 28 2012

Fingerprint

Dielectric losses
dielectric loss
Dielectric properties
dielectric properties
Electric fields
Doping (additives)
Magnetic fields
conductivity
electric fields
Curie temperature
magnetic fields
electron transfer
impedance
Electrodes
electrodes
Electrons
room temperature
Temperature

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Hou, Y., Yao, Y., Dong, S., Huang, X., Sun, X., & Li, X. (2012). Tunable dielectric properties in Mn-doped LuFe 2O 4 system. Journal of Materials Research, 27(6), 922-927. https://doi.org/10.1557/jmr.2011.446
Hou, Ying ; Yao, Yiping ; Dong, Sining ; Huang, Xi ; Sun, Xuefeng ; Li, Xiaoguang. / Tunable dielectric properties in Mn-doped LuFe 2O 4 system. In: Journal of Materials Research. 2012 ; Vol. 27, No. 6. pp. 922-927.
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Hou, Y, Yao, Y, Dong, S, Huang, X, Sun, X & Li, X 2012, 'Tunable dielectric properties in Mn-doped LuFe 2O 4 system', Journal of Materials Research, vol. 27, no. 6, pp. 922-927. https://doi.org/10.1557/jmr.2011.446

Tunable dielectric properties in Mn-doped LuFe 2O 4 system. / Hou, Ying; Yao, Yiping; Dong, Sining; Huang, Xi; Sun, Xuefeng; Li, Xiaoguang.

In: Journal of Materials Research, Vol. 27, No. 6, 28.03.2012, p. 922-927.

Research output: Contribution to journalArticle

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AU - Hou, Ying

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AU - Li, Xiaoguang

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AB - The dielectric properties and tunability with external magnetic and electric fields for LuFe 2-xMn xO 4 (0 ≤ x ≤ 1) are systematically studied. It was found that the dielectric loss, the ferrimagnetic Curie temperature, and the conductivity reduce with increasing Mn doping. One of the most important results is that the room temperature dielectric tunability with low magnetic and electric fields can be achieved in these samples. The analysis demonstrates that the electron transfer between Fe 2+ and Fe 3+ is efficiently suppressed with Mn doping and thus results in the decreases of the leaky conductivity and the dielectric loss. Furthermore, from the studies on the combination of impedance and modulus complex planes for the samples with different electrodes, the tunability is found to be more closely related to the extrinsic effect than the intrinsic bulk effect.

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