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Journal of Materials Science

, Volume 42, Issue 22, pp 9324–9330 | Cite as

Dielectric and thermal characteristics of gel grown single crystals of ytterbium tartrate trihydrate

  • Basharat Want
  • Farooq Ahmad
  • P. N. KotruEmail author
Article

Abstract

Dielectric and thermal characteristics of gel grown single crystals of ytterbium tartrate trihydrate have been carried out. The dielectric constant has been measured as a function of frequency in the range 2 kHz–1 MHz and temperature range 30–300 °C. The dielectric constant increases with temperature, attains a peak near 215 °C, and then decreases as the temperature exceeds 215 °C. The dielectric anomaly at 215 °C is suggested to be due to phase transition brought about in the material. The dielectric behaviour of the material is correlated with the results on thermal analysis. Thermogravimetric and differential thermal analysis have been used to study the thermal characteristics of the material. The experimental results show that the material is thermally stable up to 200 °C. The decomposition process occurs in two stages until ytterbium oxide is formed at 700 °C. The non-isothermal kinetic parameters e.g., activation energy and the frequency factor have been evaluated for each stage of thermal decomposition by using the integral method, applying the Coats–Redfern approximation.

Keywords

Tartrate Tartaric Acid Ytterbium Differential Thermal Analysis Curve Observe Weight Loss 

Notes

Acknowledgement

One of the authors (B. Want) is thankful to the UGC, New Delhi and Department of Higher Education, Government of J & K for extending the tenure of the teacher fellowship. The corresponding author (PNK) is thankful to the All India Council of Technical Education, New Delhi for award of Emeritus fellowship. The authors are grateful to Professor T. K. Razdan of the Department of Chemistry, University of Kashmir, presently at the Department of Chemistry, University of Jammu, for his valuable suggestions.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.Department of PhysicsUniversity of KashmirSrinagarIndia
  2. 2.Department of Physics and ElectronicsUniversity of JammuJammuIndia

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