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Pr doped bismuth ferrite ceramics with enhanced multiferroic properties.

P Uniyal¹, K L Yadav

¹Department of Physics, Indian Institute of Technology Roorkee, Roorkee 247667, India.

Journal of Physics. Condensed Matter : an Institute of Physics Journal

|August 12, 2011

Summary

Praseodymium doping in bismuth ferrite ceramics enhances electrical resistivity and exhibits magnetoelectric coupling. These Praseodymium-modified bismuth ferrite (BLPFO) materials show promising magnetic and electrical properties at room temperature.

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Area of Science:

Materials Science
Solid State Chemistry
Condensed Matter Physics

Background:

Bismuth ferrite (BiFeO3) is a multiferroic material with potential applications.
Understanding doping effects is crucial for tailoring material properties.

Purpose of the Study:

Investigate the impact of Praseodymium (Pr) doping on the structural, electrical, and magnetic properties of bismuth ferrite.
Explore the magnetoelectric coupling in Pr-doped bismuth ferrite ceramics.

Main Methods:

Conventional solid-state reaction method for synthesizing Pr-modified Bi(0.9-x)La(0.1)Pr(x)FeO3 (BLPFO-x) ceramics.
X-ray diffraction analysis to confirm phase formation.
Electrical and magnetic property measurements.

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Main Results:

X-ray analysis confirmed the rhombohedral bismuth ferrite phase.
Pr doping significantly increased electrical resistivity.
Observed electrical polarization hysteresis loops and spontaneous magnetic moment at room temperature.
Demonstrated strong magnetoelectric coupling in BLPFO-2 ceramics via magnetic field dependence of polarization and dielectric constant.

Conclusions:

Praseodymium doping is an effective strategy to enhance the electrical and magnetic properties of bismuth ferrite.
The observed magnetoelectric coupling highlights the potential of BLPFO ceramics for advanced applications.