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Iron Oxide-based Magnetic Nanoparticles for High Temperature Span Magnetocaloric Applications

Published online by Cambridge University Press:  03 June 2014

V. Chaudhary  and
R. V. Ramanujan
V. Chaudhary
Affiliation:
Interdisciplinary Graduate School, Nanyang Technological University, Singapore, 639798 Energy Research Institute @NTU (ERI@N), Nanyang Technological University, Singapore 637553 School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798
R. V. Ramanujan*
Affiliation:
School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798
*
#Corresponding author: ramanujan@ntu.edu.sg
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Abstract

The magnetocaloric effect of chemically synthesized Mn0.3Zn0.7Fe2O4 superparamagnetic nanoparticles with average crystallite size of 11 nm is reported. The magnitude of the magnetic entropy change (ΔSM), calculated from magnetization isotherms in the temperature range of 30 K to 400 K, increases from - 0.16 J-kg-1K-1 for a field of 1 T to - 0.88 J-kg-1K-1 for 5 T at room temperature. Our results indicate that ΔSM values are much higher than primarily reported values for this class of nanoparticles. ΔSM is not limited to the ferromagnetic-paramagnetic transition temperature; instead, it occurs over a broad range of temperatures, resulting in high relative cooling power.

Keywords

magnetic propertiesoxidepowder
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1708: Symposium VV – Magnetic Nanomaterials and Nanostructures , 2014 , mrss14-1708-vv10-08
Copyright
Copyright © Materials Research Society 2014 

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References

REFERENCES

Franco, V., Bl´azquez, J.S., Ingale, B., Conde, A., Annu. Rev. Mater. Res. 42, 305 (2012)CrossRefGoogle Scholar
Law, J.Y., Franco, V., and Ramanujan, R.V., J. Appl. Phys. 110, 023907 (2011); 111, 113919(2012)CrossRefGoogle Scholar
Tishin, A.M. and Spichkin, Y.I., The Magnetocaloric Effect and Its Applications, (Institute of Physics, Bristol, 2003)CrossRefGoogle Scholar
Gschneidner, K.A.. Pecharsky, V.K., Tsokol, A.O., Rep. Prog. Phys. 68, 1479 (2005)CrossRefGoogle Scholar
Hariharan, S., Gass, J., Rev. Adv. Mater. Sci. 10 398–402 (2005)Google Scholar
Gass, J., Srikanth, H., Kislov, N., Srinivasan, S.S. and Emirov, Y., J. Appl. Phys. 103, 07B309 (2008)CrossRefGoogle Scholar
Xi, S., Lu, W. and Sun, Y., J. Appl. Phys. 111, 063922 (2012)CrossRefGoogle Scholar
Burianova, S., Poltierova-Vejpravova, J., Holec, P., Plocek, J., Journal of Physics: Conference Series 200, 072015 (2010)Google Scholar
McMichael, R.D., Shull, R.D., Swartzendruber, L.J., Bennett, L.H., Watson, R.E., Magn, J.. Magn. Mater. 111, 29 (1992)CrossRefGoogle Scholar
Cullity, B.D., Elements of X-ray Diffraction, (Addison-Wesley, Massachusetts, 1956) p. 99 Google Scholar
Chantrell, R.W., Bradbury, A., Popplrwell, J. and Carles, S.W., J. Appl. Phys 53, 2742 (1982)CrossRefGoogle Scholar
Zeng, H., Yue, M., Zhang, J., Kuang, C.. Appl Nanosci. 1, 51 (2011)CrossRefGoogle Scholar
Rosenweig, R. E., Ferrohydrodynamics, (Cambridge University press, 1985) p.34 Google Scholar