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Strain induced anomalous red shift in mesoscopic iron oxide prepared by a novel technique

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Abstract

Nano magnetic oxides are promising candidates for high density magnetic storage and other applications. Nonspherical mesoscopic iron oxide particles are also candidate materials for studying the shape, size and strain induced modifications of various physical properties viz. optical, magnetic and structural. Spherical and nonspherical iron oxides having an aspect ratio, ∼2, are synthesized by employing starch and ethylene glycol and starch and water, respectively by a novel technique. Their optical, structural, thermal and magnetic properties are evaluated. A red shift of 0·24 eV is observed in the case of nonspherical particles when compared to spherical ones. The red shift is attributed to strain induced changes in internal pressure inside the elongated iron oxide particles. Pressure induced effects are due to the increased overlap of wave functions. Magnetic measurements reveal that particles are superparamagnetic. The marked increase in coercivity in the case of elongated particles is a clear evidence for shape induced anisotropy. The decreased specific saturation magnetization of the samples is explained on the basis of weight percentage of starch, a nonmagnetic component and is verified by TGA and FTIR studies. This technique can be modified for tailoring the aspect ratio and these particles are promising candidates for drug delivery and contrast enhancement agents in magnetic resonance imaging.

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References

  • Anantharaman M R, Joseph K V and Keer H V 1997 Bull. Mater. Sci. 20 975

    Article  CAS  Google Scholar 

  • Arndt V, Basf A G and Ludwigshafen 1998 Magn. IEEE Trans. 24 1796

    Article  Google Scholar 

  • Bate G 1991 J. Magn. & Magn. Mater. 100 413

    Article  CAS  Google Scholar 

  • Bhattacharyya D, Chaudhuri S and Pal A K 1992 Vacuum 43 313

    Article  CAS  Google Scholar 

  • Chakrabarti S, Ganguli D and Chaudhuri S 2004 Physica E24 333

    Google Scholar 

  • Chikazumi S 1964 Physics of magnetism (New York: John Wiley & Sons)

    Google Scholar 

  • Cohen J B 1990 Ultramicroscopy 34 41

    Article  CAS  Google Scholar 

  • Cullity B D 1972 Introduction to magnetic materials (Philippines: Addison-Wesley Publishing Company)

    Google Scholar 

  • Dallas Panagiotis, Moutis Nicolas, Devlin Eamonn, Niarchos Dimitrios and Pentridis Dimitros 2006 Nanotechnology 17 5019

    Article  CAS  Google Scholar 

  • Deng M C, Hsu S L and Chin T S 1992 IEEE Trans. Magn. 28 2385

    Article  CAS  Google Scholar 

  • Hyeon Taeghwan 2003 Chem. Commun. 927

  • Kachkachi H, Ezzir A, Nogues M and Tronc E 2000 Eur. Phys. J. B14 681

    Google Scholar 

  • Khaleel Abbas A 2004 Chem. Eur. J. 10 925

    Article  CAS  Google Scholar 

  • Nair Swapna S, Mathews Mercy and Anantharaman M R 2005 Chem. Phys. Letts 406 398

    Article  Google Scholar 

  • Pankov J J 1971 Optical processes in semiconductors (New Jersey: Prentice-Hall)

    Google Scholar 

  • Raksha Sharma, Subhalakshmi Lamba and Annapoorni S 2005 J. Phys. D: Appl. Phys. 38 3354

    Article  Google Scholar 

  • Sabino Veintemillas-Verdaguer et al 2004 J. Phys. D: Appl. Phys. 37 2054

    Article  Google Scholar 

  • Silverstein Robert M and Webster Francis X 1964 Spectroscopic identification of organic compounds (New York: John Wiley & Sons)

    Google Scholar 

  • Vassiliou John K, Mehrotra Vivek, Russell Michal W, McMichael R D, Shull R D and Ronald F Ziolo 1993 J. Appl. Phys. 73 10

    Google Scholar 

  • Venkatesh Rao, Shashimohan A L and Biswas A B 1974 J. Mater. Sci. 9 430

    Article  Google Scholar 

  • Viswanathan B 1990 Ferrite materials: Science and Technology (New Delhi: Narosa Publishing House)

    Google Scholar 

Download references

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Authors and Affiliations

  1. Department of Physics, Cochin University of Science and Technology, Cochin, 682 022, India

    T. N. Narayanan, D. Sakthi Kumar, Yasuhiko Yoshida & M. R. Anantharaman

  2. Bio-Nano Electronics Research Centre, Department of Applied Chemistry, Toyo University, Toyo, Japan

    D. Sakthi Kumar & Yasuhiko Yoshida

Authors
  1. T. N. Narayanan
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  2. D. Sakthi Kumar
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  3. Yasuhiko Yoshida
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  4. M. R. Anantharaman
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Correspondence to M. R. Anantharaman.

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Narayanan, T.N., Sakthi Kumar, D., Yoshida, Y. et al. Strain induced anomalous red shift in mesoscopic iron oxide prepared by a novel technique. Bull Mater Sci 31, 759–766 (2008). https://doi.org/10.1007/s12034-008-0120-3

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  • DOI: https://doi.org/10.1007/s12034-008-0120-3

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