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Spin-flop driven magneto-dielectric effect in Co4Nb2O9
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10.1063/1.3645017
/content/aip/journal/apl/99/13/10.1063/1.3645017
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/13/10.1063/1.3645017
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Figures

Image of FIG. 1.
FIG. 1.

(a) Temperature dependence of zero field cooled molar magnetic susceptibility, χ, and inverse susceptibility of Co4Nb2O9. Linear fit of the χ −1(T) dependence yields Weiss temperature θW  ≈ −78.3 K and Curie constant C = 15.29 cm3 K/mol. (b) Field dependence of magnetic moment of Co4Nb2O9 measured at 2 K. Spin flop transition occurs at Hc  ≈ 12 kOe.

Image of FIG. 2.
FIG. 2.

(Color online) Temperature dependence of (a) dielectric constant, ɛ′, and (b) dielectric loss, tan δ, of Co4Nb2O9 at selected frequencies f = 0.5, 1, 2, 5, 10, 20, 50, 100, 200, and 500 kHz.

Image of FIG. 3.
FIG. 3.

(Color online) (a) Magnetic field dependence of dielectric constant of Co4Nb2O9 in the vicinity of the AFM phase transition. The data were measured at 500 Hz. The inset shows field dependence of Δɛ′ = ɛ′(H) − ɛ′(H = 0), at T = 27.2 K. (b) Frequency dependence of dielectric constant measured at 27.2 K in various magnetic fields. The lines are the guides for the eye.

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/content/aip/journal/apl/99/13/10.1063/1.3645017
2011-09-29
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Spin-flop driven magneto-dielectric effect in Co4Nb2O9
http://aip.metastore.ingenta.com/content/aip/journal/apl/99/13/10.1063/1.3645017
10.1063/1.3645017
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