Structural and Magnetic Features of Mn_{1-x}Zn_xFe_2O_4 Nanoparticles

• Authors: A. Mendoza , J. Prado , O. Almanza
• Languages of publication: EN

Abstracts

EN

This paper reports on the magnetic properties of Mn_{1-x}Zn_x-ferrite nanoparticles. Different x compositions of the magnetic material have been considered. Field- and temperature-dependent magnetization curves and electron paramagnetic resonance (EPR) at different temperatures were used to reveal the magnetic properties of the samples. For x=0.5, the EPR spectra consist of a single resonance signal, strongly symmetrical, with g = 3.25 close to 2073 G, and an asymmetric line corresponding to g = 4.4 for x = 0. The asymmetry is attributed to a random distribution of the anisotropy in the system, with perpendicular and parallel modes, giving information about the effective anisotropy of the system. For high concentrations, the resonant field shifts to 2875 G. Magnetization measurements as function of temperature at 60 Oe according to the standard zero field cooling (ZFC) and field cooling (FC) procedures are reported. The behavior of field cooling magnetization (MFC) at low temperatures evidences the presence of strong interparticles interactions.

Keywords

EN

75.75.Fk; 75.30.Gw; 75.60.Ch; 75.50.Gg

Discipline

• 75.50.Gg: Ferrimagnetics
• 75.30.Gw: Magnetic anisotropy
• 75.60.Ch: Domain walls and domain structure(for magnetic bubbles and vortices, see 75.70.Kw)
• 75.75.Fk: Domain structures in nanoparticles

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 4
• Pages: 950-953

Dates

published

2012-04

Contributors

author

A. Mendoza

• Magnetic Materials and Nanostructures Group, Phys. Dep., Universidad Nacional de Colombia, Carrera 45 No 26-85, Bogotá, Colombia

author

J. Prado

• Excellence Center for Novel Materials, CENM, Calle 13 N.100-00 Building 320 ofice 1030, Cali, Colombia

author

O. Almanza

• Physics Department, Universidad Nacional de Colombia, Carrera 45 No 26-85, Bogotá, Colombia

References

• 1. G. Ott, J. Wrba, R. Lucke, J. Magn. Magn. Mater., 254-255, 535, (2003)
• 2. Q.A. Pankhrust, J. Connolly, S.K. Jones, J. Dobson, J. Phys. D, 36, 167, (2003)
• 3. U. Häfeli, W. Schütt, J. Teller, M. Zborowski, Editors, Scientific and Clinical Application of Magnetic Carriers, Plenum Press, New York, (1997)
• 4. A.H. Morrish, P.E. Clark, Phys. Rev. B, 11, 282, (1975)
• 5. R. Justin Joseyphus, A. Narayanasamy, K. Shinoda, B. Jeyadevan, K. Tohji, J. Phys. Chem. Solids, 67, 1510 (2006)
• 6. J. Wang, C. Zeng, Z. Peng, Q. Chen, Physica B, 349, 124, (2004)
• 7. J.P. Jamet, A.P. Malozemoff, Phys. Rev. B, 18, 75, (1978)
• 8. F. Gazeau, J. C. Bacri, F. Gendron, R. Perzynski, Yu. L. Raikher, V. I. Stepanov and F. Dubois, J. Magn. Mater. 186, 175, (1998)
• 9. E. De Biasi, C.A. Ramos, R.D. Zysler, H. Romero, Phys. Rev. B, 65, 144416, (2002)
• 10. R. Berger, J. Kliava, J.C. Claude Bissey, J. Appl. Phys., 87, 7379, (2000)
• 11. A.E. Berkowitz, W.J. Shuele, P.J. Flanders, J. Appl. Phys., 39, 1261, (1968)
• 12. J.M.D. Coey, Phys. Rev. Lett., 27, 1140, (1971)
• 13. D.J. Fatemi, V.G. Harris, M.X. Chen, S.K. Malik, W.B. Yelon, G.J. Long, A. Mohan, J. Appl. Phys., 85, 5172, (1999)
• 14. C. Rath, S. Anand, R.P. Das, K.K. Sahu, S.D. Kulkarni, S.K. Date, N.C. Mishra, J. Appl. Phys., 91, 2211, (2002)
• 15. R. Arulmurugan, B. Jeyadevan, G. Vaidyanathan, S. Sendhilnathan, J. Magn. Magn. Mater., 288, 470, (2005)
• 16. A.J. Rondinone, A.C.S. Samia, Z.J. Zhang, J. Phys. Chem. B, 103, 6876, (1999)
• 17. A.J. Rondinone, A.C.S. Samia, Z.J. Zhang, J. Phys. Chem. B, 104, 7919, (2000)
• 18. G.A. Mendoza, O. Guzmán, H. Ariza-Calderón, P. Prieto, J. Appl. Phys., 97, 10A507, (2005)
• 19. E. De Biasi, C.A. Ramos, R.D. Zysler, Phys. Rev. B 65, 144416, (2002)

Identifiers

DOI

10.12693/APhysPolA.121.950