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Chin. Phys. B, 2010, Vol. 19(7): 077201    DOI: 10.1088/1674-1056/19/7/077201

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

Liu Yi
College of Science, Guizhou University, Guiyang 550025, China
Abstract  The magnetic, conductivity, and dielectric properties have been investigated in single-phase polycrystalline Y0.1Co1.9MnO4. The temperature-dependent magnetisation reveals the ferromagnetic transition in sample at a low temperature (~186 K). Magnetisation as a function of field H (MH 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:  magnetic      dielectric      conductivity      spinel oxide  
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 Coexistence of magnetic and ferroelectric properties in Y0.1Co1.9MnO4 2010 Chin. Phys. B 19 077201

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