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Applied Physics A

, 122:604 | Cite as

Structural, dielectric and impedance characteristics of lanthanum-modified BiFeO3–PbTiO3 electronic system

  • S. K. Pradhan
  • S. N. Das
  • S. Bhuyan
  • C. Behera
  • R. Padhee
  • R. N. P. Choudhary
Article

Abstract

A lanthanum-modified BiFeO3–PbTiO3 binary electronic system has been fabricated by a high-temperature solid-state reaction technique. The structural, dielectric and electrical properties of a single phase of multicomponent system are investigated to understand its ferroelectrics as well as relaxation behavior. The X-ray diffraction structural analysis substantiates the formation of a new stable phase of tetragonal system (with a large c/a ratio 1.23) without any trace of impurity phase. The electrical behavior of the processed material is characterized through impedance spectroscopy in a wide frequency range (1 kHz–1 MHz) over a temperature range of 25–500 °C. It is observed that the substitution of lanthanum-modified PbTiO3 (PT) into BiFeO3 (BFO) reveals enviable multiferroic property which is evident from the ME coefficient measurement and ferroelectric loop. It also reduces the electrical leakage current or tangent loss. The ac conductivity of the solid solution increases with increase in frequency in the low-temperature region. The impedance spectroscopy of the synthesized material reflects the dielectric relaxation of non-Debye type.

Keywords

BiFeO3 Electric Modulus Modulus Analysis Multiferroic Property Voltage Coefficient 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • S. K. Pradhan
    • 1
  • S. N. Das
    • 1
  • S. Bhuyan
    • 1
  • C. Behera
    • 2
  • R. Padhee
    • 2
  • R. N. P. Choudhary
    • 2
  1. 1.Department of Electronics and Instrumentation EngineeringSiksha ‘O’ Anusandhan UniversityBhubaneswarIndia
  2. 2.Multifunctional Research Laboratory, Department of PhysicsSiksha ‘O’ Anusandhan UniversityBhubaneswarIndia

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