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Study of Ca doping on A- site on the structural and physical properties of BLTMNZ ceramics
School of Physics, Shoolini University, Solan, HP, India .
School of Physics, Shoolini University, Solan, HP, India .
Department of glass and ceramics, Aveiro University, Portugal.
Linköping University, Department of Physics, Chemistry and Biology, Biosensors and Bioelectronics. Linköping University, The Institute of Technology.
2014 (English)In: Advanced Materials Letters, ISSN 0976-3961, E-ISSN 0976-397X, Vol. 5, no 5, 255-259 p.Article in journal (Refereed) Published
Abstract [en]

The ferroelectric Ca doped (Ba0.9575La0.04X0.0025) (Ti0.815Mn0.0025Nb0.0025Zr0.18)0.99O3 was prepared by a high-temperature solid state reaction technique. For the understanding of the electrical and dielectric property, the relation between the crystal structures, electrical transition and ferroelectric transitions with increasing temperature (–160 to 35°C) have been analyzed. X-ray diffraction analysis of the powders suggests the formation of a single-phase material with monoclinic structure. Capacitance and tanδ of the specimens were measured in the temperature range from -160 to 35°Cat frequencies 1 kHz – 1 MHz. Detailed studies of dielectric and electrical properties indicate that the Curie temperature shifted to higher temperature with the increase in frequency. Moreover, the dielectric maxima dropped down rapidly initially and the dielectric peaks became extremely broad. The AC conductivity increases with increase in frequency. The low value of activation energy obtained for the ceramic samples could be attributed to the influence of electronic contribution to the conductivity.

Place, publisher, year, edition, pages
Vinova Bhave Research Institute , 2014. Vol. 5, no 5, 255-259 p.
Keyword [en]
Dielectric properties; Perovskite; lead-free ceramics; high dielectrics.
National Category
Energy Systems
URN: urn:nbn:se:liu:diva-107977DOI: 10.5185/amlett.2013.10547ScopusID: 2-s2.0-84896809751OAI: diva2:728466
Available from: 2014-06-24 Created: 2014-06-24 Last updated: 2015-03-30Bibliographically approved

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Tiwari, Ashutosh
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Biosensors and BioelectronicsThe Institute of Technology
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