Structure, infra-red, dielectric properties and conduction mechanism of Ti and Cu–Ti co-doped bismuth ferrite (BiFeO3): a comparison study View Full Text


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Article Info

DATE

2018-11

AUTHORS

Muhammad Asif Rafiq, Qaisar Khushi Muhammad, Sameel Nasir, Usama Amin, Adnan Maqbool, Zubair Ahmad

ABSTRACT

Multiferroic compositions BiFe0.90Ti0.10O3 and BiFe0.885Cu0.015Ti0.1O3 were synthesized by solid-state mixed oxide method. XRD studies confirmed rhombohedral crystal structure for both compositions while a little change in lattice parameters was observed with Cu–Ti co-doping. SEM analysis indicate that with co-doping comparatively smaller grains were evolved in the microstructure. Fourier-transform infrared spectroscopy (FTIR) was conducted to study absorption bands of different phases. High temperature A.C. conductivity (σac) analysis revealed the hopping charge conduction mechanism. Impedance spectroscopy (IS) was employed from room temperature to 230 °C in 100 Hz–1 MHz frequency range to analyze dielectric properties. IS data indicated decline in impedance with increase in temperature and frequency which confirms negative temperature coefficient of resistance (NTCR) behavior. Owing to the resistance–temperature characteristics, these compositions are well suited for thermal sensor applications. More... »

PAGES

748

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00339-018-2170-8

DOI

http://dx.doi.org/10.1007/s00339-018-2170-8

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1107646598


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