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Study of structural and electrical properties of arsenic ferrites

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Published/Copyright: June 11, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 99 Issue 3

Abstract

The effect of inclusion of trivalent arsenic ions with increasing arsenic concentration on the structural, electrical and thermal properties of the system AsxFe3 – xO4 (x = 0.2, 0.4, 0.6, 0.8 and 1.0), synthesized at ambient temperature have been studied. Thermal measurements from room temperature to 1173 K and DC resistivity measurements with activation energy calculations were used for this purpose. Thermal measurements were carried out on these value added products. This investigation provides evidence for all compounds of the system. In particular: 1) They are stable up to 473 K and further only a small loss in weight was observed for the temperature range of 473 K – 1113 K, 2) In As0.2Fe2.8O4, a strong exothermic peak was observed at around 561 K, which has been shifted to 541 K for AsFe2O4, this shows the phase transition and sample crystallization. X-ray diffraction was used for characterization and DC resistivity measurement from room temperature to 623 K shows semi conducting behavior. The present work reveals that the incorporation of As3+ ions in the lattice of magnetite results in orthorhombic symmetry for arsenic composition x = 0.2 to x = 1.0.

Keywords: Electrical conductivity; Value added product; Thermal stability; Semiconductor; Arsenic pollution
* Correspondence address, Senior Scientific Assistant Prashant Dinkarrao Zade, National Institute of Miners' Health (NIMH), [Ministry of Mines, Govt. of India], JNARDDC Campus, Opp. Wadi Police Station, Amravati Road, Wadi, Nagpur-440023, Maharashtra, India, Tel.: +91 07104 224 494/95, Fax: +91 07104 224 121, E-mail:

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Received: 2007-4-22
Accepted: 2007-12-21
Published Online: 2013-06-11
Published in Print: 2008-03-01

© 2008, Carl Hanser Verlag, München

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  9. Isothermal section at 773 K of the Gd–Er–Co ternary system
  10. Thermophysical properties of Nd-, Er-, YNi-alloys
  11. Influence of carbides and of the dendritic orientation on the thermal expansion of Ni-base, Co-base and Fe-base simple cast alloys
  12. Influence of previous ageing treatments on the strength of an Al-4.3 wt.% Mg-1.2 wt.% Cu alloy processed by ECAE
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  16. Thermodynamic modeling of the Cu–Se system
  17. Phase transition in the Fe–V system
  18. Microstructural changes at the ultra-precision machined surface of Zn–Al based alloy
  19. Study of structural and electrical properties of arsenic ferrites
  20. Study of thin film structure based on MgF2, CeO2 and Al2O3 layers for optical applications
  21. Notifications
  22. DGM News
https://doi.org/10.3139/146.101641
Keywords for this article
Electrical conductivity; Value added product; Thermal stability; Semiconductor; Arsenic pollution

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Christoph Schwink 80 years
  5. Basic
  6. Initial stage of bi-modal microstructure in TiO2-doped α-Al2O3 ceramics induced by SiO2 impurity
  7. Statistical thermodynamic approach to molten Fe–Cr–P
  8. Phase diagram of the iron-rich portion in the iron–gallium–aluminum ternary system
  9. Isothermal section at 773 K of the Gd–Er–Co ternary system
  10. Thermophysical properties of Nd-, Er-, YNi-alloys
  11. Influence of carbides and of the dendritic orientation on the thermal expansion of Ni-base, Co-base and Fe-base simple cast alloys
  12. Influence of previous ageing treatments on the strength of an Al-4.3 wt.% Mg-1.2 wt.% Cu alloy processed by ECAE
  13. Applied
  14. Formation and microstructure of (Ti, V)C-reinforced iron-matrix composites using self-propagating high-temperature synthesis
  15. Effect of Cr and V on phase equilibria in Co–WC based hardmetals
  16. Thermodynamic modeling of the Cu–Se system
  17. Phase transition in the Fe–V system
  18. Microstructural changes at the ultra-precision machined surface of Zn–Al based alloy
  19. Study of structural and electrical properties of arsenic ferrites
  20. Study of thin film structure based on MgF2, CeO2 and Al2O3 layers for optical applications
  21. Notifications
  22. DGM News
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