I am getting signature of semiconductor to metallic type of transition in conductivity and impedance measurements through decrease in conductivity with Temperature and increase in resistance in Bi2Fe4O9 which is p type semiconductor. I got to know this may be a feature of degenerate semiconductor. In literature I found out that this may be because of second order transition from Ferroelectric to paraelectric transition but there is no structural phase transition observed. So Can anyone please explain how would I confirm the origin of such feature?
Dear Alaka Panda,
could you show (or send), please, an impedance (comparative) graph at two Temperatures (T1Low, T2High) ?
Kindly find the file I have taken two T below and above the transition.
Yes , I am observing a peak in dielectric constant vs T at transition temperature. My concern is the sample is a semiconductor so what is the origin of such behaviourin.IS it due to metallic type of transition (or degenerate semiconductor) or second order Ferroelectric to paraelectric transtion.
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