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Structural, DC Conductivity and Electric Modulus Studies of Polypyrrole Praseodymium Manganite Nanocomposites

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Title Structural, DC Conductivity and Electric Modulus Studies of Polypyrrole Praseodymium Manganite Nanocomposites
 
Creator Bharathi, Meti
Anuradha, K N
Murugendrappa, M V
 
Subject Polypyrrole/PraseodymiumManganite
Nanocomposites
DCconductivity
Electric modulus
 
Description 165-174
Praseodymium Calcium Manganite (PCM) nanoparticles were synthesized by sol-gel method. Polypyrrole (PPy) and
polypyrrole–praseodymium manganite nanocomposites (PPy/PCM) were synthesized by in-situ chemical polymerization
method. Transmission electron microscope (TEM) confirmed good crystallinity with 42-63 nm average particle size.
Scanning electron microscope (SEM) exhibited well-defined core structure of PPy and the PPy/PCM nanocomposites. X-ray
diffraction (XRD) patterns of PPy showed amorphous nature and those of composites showed semicrystalline nature. UVVis
spectroscopy was used to study the energy band gap for all the nanocomposites and hence they may find a place in wide
band gap applications. The UV (231nm) and visible (363 nm and 377 nm) emissions were observed from the spectrum. DC
conductivity was studied from 473 to 303 K for all the nanocomposites and found that conduction is of semiconductor type.
Analysis of electric modulus confirmed the contribution from grain and grain boundary, non-Debye type relaxation and dc
conductivity obeyed Correlated Barrier Hopping (CBH) model.
 
Date 2023-03-22T10:27:27Z
2023-03-22T10:27:27Z
2023-03
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscpr.res.in/handle/123456789/61580
https://doi.org/10.56042/ijpap.v61i3.70065
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJPAP Vol.61(03) [March 2023]