ESR of Y and Pb-doped BaTiO3 ceramics with positive temperature coefficient of resistivity

A M Slipenyuk,M D Glinchuk,V V Laguta,I P Bykov,S N Nokhrin,A G Belous,O I Y'Yunov,L L Kovalenko,L Jastrabik

doi:10.1080/00150190108215017

ESR of Y and Pb-doped BaTiO3 ceramics with positive temperature coefficient of resistivity

A M Slipenyuk, M D Glinchuk + Show 7 more

https://doi.org/10.1080/00150190108215017

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Journal: Ferroelectrics	Publication Date: Mar 1, 2001
Citations: 1

Affiliation: Frantsevich Institute for Problems in Materials Science

#Electron Spin Resonance #Positive Temperature Coefficient Of Resistivity + Show 8 more

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Abstract

Electron spin resonance (ESR) and resistivity investigation of BaTiO3 ceramics doped by Y and by both Y and Pb are presented. ESR spectra of the Ti3+. Mn2+ and Fe3+ were observed. It is shown that the most intensive resonance line belongs to Ti3+-Y3+ paramagnetic complex. The essential decrease of the Ti3+-Y3+ ESR spectra intensity in comparison with those in samples without Pb was revealed. This gives evidence that Pb ions decrease the number of Y3+ ions substituted for Ba ions and so the number of Ti3+-Y3+ centers decreases. Essential shift of the temperature of the PTCR effect beginning and resistivity increasing under Pbdoping are observed.

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