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Ferroelectricity in single crystal InMnO3
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Image of FIG. 1.
FIG. 1.

Images of a typical synthesized crystal (a), a mounted InMnO3 single crystal for XRD measurements (b), and the crystal structure for InMnO3 (c) are shown.

Image of FIG. 2.
FIG. 2.

(a) Comparison of the Mn K-edge near-edge spectra of RMnO3 (R = Sc, Y, Lu, In) showing the similar structure for the entire series of compounds with InMnO3 (powdered single crystals) as dashed line. (b) Local structure at the Mn sites from the extended x-ray absorption data. Note the reduced amplitude for the In systems for the distant shells (Mn-Mn third shell).

Image of FIG. 3.
FIG. 3.

Remanent P-E hysteresis loops of an InMnO3 single crystal measured at 1 kHz at room temperature.

Image of FIG. 4.
FIG. 4.

(a) Heat capacity (Cp/T) vs. temperature of single crystals revealing a Néel temperature of approximately 118 K. Insert: shows the shoulder with a peak near 42 K, possibly corresponding to spin rotation of Mn ions (in the ab-plane). The error bars are smaller than the symbols. (b) The low-temperature heat capacity of single crystal InMnO3 plotted as Cp/T vs. T2. The solid line is fit of expression Cp/T = γ + βΤ2 + β5T4.


Generic image for table
Table I.

Structural parameters from single crystal refinement. a

Generic image for table
Table II.

Selected bond distances (Å). b


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ferroelectricity in single crystal InMnO3