Coexistence of magnetic and ferroelectric properties in Y0.1Co1.9MnO4

doi:10.1088/1674-1056/19/7/077201

Abstract The magnetic, conductivity, and dielectric properties have been investigated in single-phase polycrystalline Y_0.1Co_1.9MnO₄. The temperature-dependent magnetisation reveals the ferromagnetic transition in sample at a low temperature (～186 K). Magnetisation as a function of field H (M—H loop) indicated the weak ferromagnetism of the sample at room temperature. The constant ε and dielectric loss tgδ measurements represent a ferroelectric phase transition at a higher temperature (～650 K), while the conductivity shows an insulator—metallic transition. The ferroelectric hysterisis loops and capacitance—voltage measurements confirm the ferroelectric nature of the sample at room temperature. The observed ferromagnetism and ferroelectric nature in this material suggests a potential multiferroic application.

Keywords: spinel oxide dielectric conductivity magnetic

Accepted manuscript online:

PACS:	77.80.Bh
	72.60.+g	(Mixed conductivity and conductivity transitions)
	75.60.Ej	(Magnetization curves, hysteresis, Barkhausen and related effects)
	71.30.+h	(Metal-insulator transitions and other electronic transitions)
	77.22.Gm	(Dielectric loss and relaxation)
	77.84.Bw	(Elements, oxides, nitrides, borides, carbides, chalcogenides, etc.)

Fund: Project supported by the Doctorial Start-up Fund of Guizhou University of China (Grant No. 2006/Z065020).

Cite this article:

Liu Yi(刘毅) Coexistence of magnetic and ferroelectric properties in Y_0.1Co_1.9MnO₄ 2010 Chin. Phys. B 19 077201

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Coexistence of magnetic and ferroelectric properties in Y0.1Co1.9MnO4

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Coexistence of magnetic and ferroelectric properties in Y_0.1Co_1.9MnO₄