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Journal of Materials Science

, Volume 31, Issue 10, pp 2683–2686 | Cite as

Characterization and thermal and electromagnetic behaviour of manganese tartrate crystals grown by the silica gel technique

  • A. C. Yanes
  • T. Lopez
  • J. Stockel
  • J. F. Peraza
  • M. E. Torres
Papers

Abstract

We report here on the dielectric properties (dielectric constant, ɛ′ and dielectric losses ɛ″), magnetic properties (μ′ and μ″), infrared spectroscopic, thermal studies (thermogravimetric analysis (TGA)), differential thermogravimetry (DTG) and differential scanning calorimetry (DSC) and X-ray diffraction (XRD) for the polycrystalline powdered samples of manganese tartrate MnC4H4O6·2H2O obtained by diffusion of manganese ions through silica gel impregnated with tartaric acid. The aforementioned properties are used as a probe for the detection and study of the different transitions that have been found in this salt. Energy dispersive analysis of X-rays (EDAX) confirmed the presence of manganese. X-ray diffraction data giving 2gq, intensity andd-values are reported for the first time. Infrared wavelengths in the range 500–4000 cm−1 and the description of peaks recorded for the material are given. Results of thermal analysis indicated that the material is thermally unstable. Dielectric and magnetic measurements were determined in the frequency range of 45 MHz to 2 GHz.

Keywords

Manganese Differential Scanning Calorimetry Dielectric Constant Dielectric Loss Tartrate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1996

Authors and Affiliations

  • A. C. Yanes
    • 1
  • T. Lopez
    • 1
  • J. Stockel
    • 1
  • J. F. Peraza
    • 1
  • M. E. Torres
    • 1
  1. 1.Department of Basic and Experimental PhysicsUniversity of La LagunaLa Laguna, TenerifeSpain

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