INTERESTING PROPERTIES OF NANO MULTIFERROIC BICOXFE1-XO3 CERAMIC

Sen K.¹*, Singh K.², Gautam A.³, Singh M.^4
1Department of Physics Himachal Pradesh University, Shimla-5
²Department of Physics Himachal Pradesh University, Shimla-5
³Department of Physics Himachal Pradesh University, Shimla-5
⁴Department of Physics Himachal Pradesh University, Shimla-5
* Corresponding Author : sen.728@gmail.com

Received : -     Accepted : -     Published : 15-06-2010
Volume : 1     Issue : 1       Pages : 22 - 30
Nanotechnol Nanosci 1.1 (2010):22-30

Conflict of Interest : None declared
Acknowledgements/Funding : The authors wish to thank S.K.Sharma at Brazil for studying magnetic properties. Research facilities provided by Deptt.Of Physics H.P.University Shimla & SAIF Chandigarh are highly acknowledged

Multiferroic have been known as materials exhibiting both ferroelectric and ferromagnetic properties in same phase, they have interesting physical properties as well as possibility of practical application in some new memories, spintronics and sensor devices. One of the interesting multiferroic material is BiFeO3 which is the only known material exhibiting good ferroelectromagnetism and room temperature, because it has a high Curie temperature (TC ~ 8300C) and a high Neel temperature (TN ~ 3700C).BiFeO3 ceramic have a rhombohedrally distorted perovskites like structure corresponding to space group R3c. Structural, dielectric, ferroelectric and ferromagnetic properties of multiferroic BiCoxFe1-xO3 (x=0.0, 0.05, 0.10, 0.15, 0.20, 0.25) ceramic were studied by solution combustion method and prepared samples were characterized by X-Ray Diffraction (XRD), Transmission Election Microscopy (TEM) and Differential Scanning Calorimetry (DSC). Improved resistivity of ~1010 ohm-cm were formed by sintering the 4000C, 6000C, 7000C calcined powder at 7500C for 60 min and also there is an improvement in M-H hysteresis loop with cobalt substitution. Room temperature ferromagnetic ordering at nano level is new and intereting on physics and technological point of view in this system.

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