Table of Contents Author Guidelines Submit a Manuscript
Advances in Condensed Matter Physics
Volume 2014, Article ID 639259, 12 pages
http://dx.doi.org/10.1155/2014/639259
Research Article

Dielectric Studies on Fe3O4 Nanodoped - -Alkyloxybenzoic Acids

1Department of Physics, Acharya Nagarjuna University, Nagarjuna Nagar 522510, India
2Department of Physics, Gitam University, Hyderabad Campus, Rudraram 502329, India
3Department of Physics, Indian Institute of Technology, Chennai 600036, India
4Department of Electronics and Communication Engineering, K.L. University, Greenfields, Vaddeswaram, Guntur, Andhra Pradesh 522002, India
5Departmant of Chemical Science, Faculty of Science, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, 31900 Kampar, Perak, Malaysia

Received 20 January 2014; Accepted 16 May 2014; Published 16 June 2014

Academic Editor: Victor V. Moshchalkov

Copyright © 2014 S. Sreehari Sastry et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Linked References

  1. X. Liu, Z. Zhong, Y. Tang, and B. Liang, “Review on the synthesis and applications of Fe3O4 nanomaterials,” Journal of Nanomaterials, vol. 2013, Article ID 902538, 7 pages, 2013. View at Publisher · View at Google Scholar · View at Scopus
  2. E. SaievarIranizad, Z. Dehghani, and M. Nadafan, “Measurement of ferronematic liquid crystal using a single beam method,” International Journal of Engineering Research and Science and Technology, vol. 3, no. 2, pp. 1043–1047, 2014. View at Google Scholar
  3. J. Mazo-Zuluaga, J. Restrepo, and J. Mejía-López, “Surface anisotropy of a Fe3O4 nanoparticle: a simulation approach,” Physica B: Condensed Matter, vol. 398, no. 2, pp. 187–190, 2007. View at Publisher · View at Google Scholar · View at Scopus
  4. R. M. Cornell and U. Schwertmann, The Iron Oxides, VCH mbH, Weinheim, Germany, 1996.
  5. M. Ramakrishna, N. Rao, P. V. D. Prasad, and V. G. K. M. Pisipati, “Orientational order parameter in alkoxy benzoic acids—optical studies,” Molecular Crystals and Liquid Crystals, vol. 528, pp. 49–63, 2010. View at Publisher · View at Google Scholar · View at Scopus
  6. H. P. Hinov and M. Petrov, “Observations of Sm C layer undulations and Sm C edge-dislocations in NOBA films,” Molecular crystals and liquid crystals, vol. 100, no. 3-4, pp. 223–251, 1983. View at Google Scholar · View at Scopus
  7. V. N. Vijayakumar, K. Murugadass, and M. L. N. Madhu Mohan, “Inter hydrogen bonded complexes of hexadecylaniline and alkoxy benzoic acids: a study of crystallization kinetics,” Brazilian Journal of Physics, vol. 39, no. 3, pp. 600–605, 2009. View at Publisher · View at Google Scholar · View at Scopus
  8. T. Chitravel and M. L. N. M. Mohan, “Occurrence of ambient temperature and reentrant smectic ordering in an intermolecular hydrogen bonding between alkyl aniline and alkoxy benzoic acids,” Molecular Crystals and Liquid Crystals, vol. 524, no. 1, pp. 131–143, 2010. View at Publisher · View at Google Scholar · View at Scopus
  9. P. A. Kumar, V. G. K. M. Pisipati, A. V. Rajeswari, and S. S. Sastry, “Induced smectic-G phase through intermolecular hydrogen bonding—part XII: thermal and phase behaviour of p-aminobenzonitrile: p-n-alkoxybenzoic acids,” Zeitschrift für Naturforschung A: Journal of Physical Sciences, vol. 57, no. 3-4, pp. 184–188, 2002. View at Google Scholar · View at Scopus
  10. L. Bata and G. Molnár, “Dielectric dispersion measurements in a nematic liquid crystal mixture,” Chemical Physics Letters, vol. 33, no. 3, pp. 535–539, 1975. View at Google Scholar · View at Scopus
  11. A. V. Koval'chuk, “Relaxation processes and charge transport across liquid crystal-electrode interface,” Journal of Physics Condensed Matter, vol. 13, no. 46, pp. 10333–10345, 2001. View at Publisher · View at Google Scholar · View at Scopus
  12. A. V. Koval'chuk, “Low-frequecy dielectric relaxation at the tunnel charge transfer across the liquid/electrode interface,” Functional Materials, vol. 8, no. 4, pp. 690–693, 2001. View at Google Scholar
  13. O. P. Gornitska, A. V. Kovalchuk, T. N. Kovalchuk et al., “Dielectric properties of nematic liquid crystals with Fe3O4 nanoparticles in direct magnetic field,” Semiconductor Physics, Quantum Electronics and Optoelectronics, vol. 12, no. 3, pp. 309–314, 2009. View at Google Scholar
  14. H. H. Liang and J. Y. Lee, “Enhanced electro-optical properties of liquid crystals devices by doping with ferroelectric nanoparticles,” in Ferroelectrics—Material Aspects, M. Lallart, Ed., chapter 10, InTech, Rijeka, Croatia, 2011. View at Publisher · View at Google Scholar
  15. M. J. Park and O. O. Park, “Alignment of liquid crystals on a topographically nano-patterned polymer surface prepared by a soft-imprint technique,” Microelectronic Engineering, vol. 85, no. 11, pp. 2261–2265, 2008. View at Publisher · View at Google Scholar · View at Scopus
  16. G. W. Gray, Molecular Structure and the Properties of Liquid Crystals, Academic Press, New York, NY, USA, 1962.
  17. R. Pavlis, Kansas USA edition of Micscape Magazine, Microscopy UK Front Page, 2006.
  18. S. S. Sastry, S. S. Begum, T. V. Kumari, V. R. K. Murthy, and S. T. Ha, “Effect of magnetite nano particles on p-n-alkyl benzoic acid mesogens,” E-Journal of Chemistry, vol. 9, no. 4, pp. 2462–2471, 2012. View at Publisher · View at Google Scholar · View at Scopus
  19. H. Stark, “Physics of colloidal dispersions in nematic liquid crystals,” Physics Report, vol. 351, no. 6, pp. 387–474, 2001. View at Google Scholar · View at Scopus
  20. R. W. Ruhwandl and E. M. Terentjev, “Long-range forces and aggregation of colloid particles in a nematic liquid crystal,” Physical Review E—Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics, vol. 55, no. 3, pp. 2958–2961, 1997. View at Google Scholar · View at Scopus
  21. F. S. Y. Yeung, Y. L. J. Ho, Y. W. Li, and H. S. Kwok, “Liquid crystal alignment layer with controllable anchoring energies,” Journal of Display Technology, vol. 4, no. 1, pp. 24–27, 2008. View at Publisher · View at Google Scholar
  22. K. Vijayalakshmi, Induced smectic phases through hydrogen bonded mesogenic systems [Ph.D. thesis], Acharya Nagarjuna University, Andhra Pradesh, India, 2009.
  23. S. Deepthi and C. R. S. Kumar, “Molecular dynamics of mesogenic p-n-alkoxy benzoic acid,” International Journal of Advanced Research, vol. 2, no. 2, pp. 30–34, 2014. View at Google Scholar
  24. M. Petrov, E. Keskinova, and B. Katranchev, “The electroconvection in the nematic liquid crystals with short range smectic C order,” Journal of Molecular Liquids, vol. 138, no. 1–3, pp. 130–138, 2008. View at Publisher · View at Google Scholar · View at Scopus
  25. A. K. Mishra and D. Das, “Investigation on Fe-doped ZnO nanostructures prepared by a chemical route,” Materials Science and Engineering B: Solid-State Materials for Advanced Technology, vol. 171, no. 1–3, pp. 5–10, 2010. View at Publisher · View at Google Scholar · View at Scopus
  26. D. C. Thompson, M. M. Tentzeris, and J. Papapolymerou, “Packaging of MMICs in multilayer LCP substrates,” IEEE Microwave and Wireless Components Letters, vol. 16, no. 7, pp. 410–412, 2006. View at Publisher · View at Google Scholar · View at Scopus
  27. S. Arrhenius, “Uber die reaktionsgeschwindigkeit bei der inversion von rohrzucker durch säuren,” Journal of Physical Chemistry, vol. 4, pp. 226–248, 1889. View at Google Scholar
  28. K. S. Cole and R. H. Cole, “Dispersion and absorption in dielectrics I. Alternating current characteristics,” Journal of Chemical Physics, vol. 9, no. 4, pp. 341–351, 1941. View at Google Scholar · View at Scopus
  29. A. Thanassoulas, E. Karatairi, C. George et al., “CdSe nanoparticles dispersed in ferroelectric smectic liquid crystals: effects upon the smectic order and the smectic-A to chiral smectic-C phase transition,” Physical Review E—Statistical, Nonlinear, and Soft Matter Physics, vol. 88, Article ID 032504, 8 pages, 2013. View at Publisher · View at Google Scholar
  30. M. Petrov, B. Katranchev, P. M. Rafailov et al., “Phase and properties of nanocomposites of hydrogen bonded liquid crystals and carbon nanotubes,” Physical Review E—Statistical, Nonlinear, and Soft Matter Physics, vol. 88, Article ID 042503, 11 pages, 2013. View at Publisher · View at Google Scholar