Barrier layer formation and PTCR effect in (1-x)\n Pb(Fe1/2Nb1/2)O3]-xPbTiO3 (x = 0.13) ceramics

2004/08/24 by Satendra Pal Singh, Singh, Satendra Pal, Akhilesh Kumar Singh +3
Engineering · Materials Science · Physics and Astronomy · #Acoustic Wave Resonator Technologies #Electrical and Thermal Properties of Materials #FOS: Physical sciences #Ferroelectric and Piezoelectric Materials #Materials Science (cond-mat.mtrl-sci) #cond-mat.mtrl-sci

paper · pdf · doi:10.48550/arxiv.cond-mat/0408509

6 pages, 4 figures, To appear in Ferroelectrics

arxiv created 2004/08/24 · openalex publication_date 2004/08/24 · arxiv updated 2009/12/01 · openalex created_date 2022/10/04 · openalex updated_date 2026/07/28

Abstract

(1-x)Pb(Fe1/2Nb1/2)O3-PbTiO3(PFN-xPT)Ceramics with x = 0.13 sintered at 1473K\nshow diffuse phase transition and very high dielectric constant at lower\nfrequencies.The high value of dielectric constant at lower frequencies is shown\nto be due to the barrier layer formation.The resistivity of the PFN-xPT\nceramics, obtained by complex impedance analysis, initially decreases with\ntemperature and then shows an upward trend beyond the ferroelectric Curie point\nreminiscent of BaTiO3 based thermistors with PTCR effect.\n

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