JMP  Vol.3 No.3 , March 2012
Mössbauer Spectroscopy of Fe-Ni-Nb-B Alloy in Weak Magnetic Field
ABSTRACT
Amorphous and nanocrystalline (Fe1–xNix)81Nb7B12 (x = 0, 0.25, 0.5, 0.75) alloys were measured by M?ssbauer spectrometry in the weak external magnetic field of 0.5 T. From structural analyses, ferromagnetic bcc-FeNi and fcc-FeNi and paramagnetic (Fe-Ni)23B6 phases were identified in the annealed samples. It was shown that in the external magnetic field the intensities of the 2nd and the 5th lines (A23 parameter) are the most sensitive M?ssbauer parameters. Rather small changes were observed in the values of internal magnetic field. Our results showed that the amorphous precursor is more sensitive to the influence of external magnetic field than the nanocrystalline alloy. All spectra of amorphous precursor showed the increase of A23 parameter and decrease of internal magnetic field values of about 1 T (±0.5 T) under influence of external magnetic field. In the case of nanocrystalline samples the tendency for the values of internal magnetic field is similar but the effect is not so pronounced. The measurements confirmed that even weak external magnetic field affected orientation of the net magnetic moments. Our results indicate that effect of the external magnetic field is stronger in the case of amorphous samples due to their disordered structure.

Cite this paper
J. Sitek, J. Degmová, K. Sedlačková and J. Dekan, "Mössbauer Spectroscopy of Fe-Ni-Nb-B Alloy in Weak Magnetic Field," Journal of Modern Physics, Vol. 3 No. 3, 2012, pp. 274-277. doi: 10.4236/jmp.2012.33038.
References
[1]   G. Vlasak, P. Svec, M. Kuzminski, A. Slawska-Wani- ewska, B. Butvinova, P. Butvin and J. Hosko, “Evolution of Physical Properties of Amorphous Fe-Ni-Nb-B Alloys with Different Ni/Fe Ratio upon Thermal Treatment,” Journal of Alloys and Compounds, Vol. 509, Suppl. 1, 2011, pp. S64-S68.

[2]   M. Arshed, M. Siddique, M. Anwar-ul-Islam, A. Ashfaq, A. Shamim and N. M. Butt, “Isochronal Crystallization of Metglass Fe83B17 Using M?ssbauer Effect and Resistivity Measurements,” Solid State Communications, Vol. 98, No. 5, 1996, pp. 427-430. doi:10.1016/0038-1098(96)00025-7

[3]   M. E. McHenry, M. A. Willard and D. E. Laughlin, “Amor- phous and Nano-Crystalline Materials for Applications as Soft Magnets,” Progress in Materials Science, Vol. 44, No. 4, 1999, pp. 291-433. doi:10.1016/S0079-6425(99)00002-X

[4]   M. L. Sui, L. H. Qian and K. Y. He, “Nanocrystallization of Ni-Fe-Nb-Si-B Amorphous Alloys,” Materials Science and Engineering: A, Vol. 286, No. 1, 2000, pp. 201-204. doi:10.1016/S0921-5093(00)00714-0

[5]   M. Kopcewicz, A. Grabias and D. L. Williamson, “Mag- netism and Nano-Structure of Fe93–x–yZr7BxCuy Alloys”, Journal of Applied Physics, Vol. 82, No. 4, 1997, pp. 1747-1759.

[6]   J. S. Garitaonandia, P. Gorria, L. F. Barquín and J. M. Ba- randiarán, “Low-Temperature Magnetic Properties of Fe Nanograins in an Amorphous Fe-Zr-B Matrix,” Physical Review B, Vol. 61, No. 9, 2000, pp. 6150-6155.

[7]   J. Bonastre, L. Escoda, A. González, J. Saurina and J. J. Suňol, “Influence of Ni Content on Fe-Nb-B Alloy For- mation,” Journal of Thermal Analysis and Calorimetry, Vol. 88, No. 1, 2007, pp. 83-86. doi:10.1007/s10973-006-8092-2

[8]   G. Vlasak, P. Svec, M. Kuzminski, A. Slawska-Wani- ewska, B. Butvinova and P. Butvin: “Magnetic Measure- ments of Fe-Ni-Nb-B and Fe-Co-Mo-Cu-B in the Vicinity of the Curie Temperature,” Journal of Magnetism and Magnetic Materials, Vol. 322, No. 14, 2010, pp. 2047- 2050. doi:10.1016/j.jmmm.2010.01.032

[9]   Y. I. Jang, J. Kim and D. H. Shin, “Microstructures and Magnetic Properties of Amorphous Fe-Si-B-Ni Alloy Rib- bons,” Materials Science and Engineering: B, Vol. 78, No. 2-3, 2000, pp. 113-118.

[10]   M. Kopcewicz, B. Idzikowski and J. Kalinowska: “M?ss- bauer Study of the Magnetism and Structure of Amor- phous and Nanocrystalline Fe81–xNixZr7B12 (x = 10 - 40) Alloys,” Journal of Applied Physics, Vol. 94, No. 1, 2003, pp. 638-650. doi:10.1063/1.1578701

[11]   P. Svec, M. Miglierini, J. Dekan, J. Turcanová, G. Vlasák, I. Skorvánek and D. Janickovic: “Influence of Structure Evolution on Magnetic Properties of Fe-Ni-Nb-B Sys- tem,” IEEE Transactions on Magnetics, Vol. 46, No. 2, 2010, pp. 412-415. doi:10.1109/TMAG.2009.2034332

[12]   X. Y. Sun, L. Zhen, C. Y. Xu, L. X. Lv, W. Z. Shao and X. D. Sun, “M?ssbauer Spectrometry Study of Early Stage Spinodal Decomposition in Fe-Cr-Co Alloy under High Magnetic Field,” Materials Letters, Vol. 63, No. 1, 2009, pp. 64-65. doi:10.1016/j.matlet.2008.09.007

[13]   M. Reissner, E. Bauer, W. Steiner and Peter Rogl, “High Field M?ssbauer and Magnetic Investigations of Pr0.73 Fe4Sb12,” Journal of Magnetism and Magnetic Materials, Vol. 272-276, Part 3, 2004, pp. 813-815. doi:10.1016/j.jmmm.2003.12.1259

[14]   M. A. Polikarpov, V. M. Cherepanov, M. A. Chuev, S. Y. Shishkov and S. S. Yakimov, “Super-Ferromagnetism of Magnetite Nanoparticles in a Weak Magnetic Field,” In: H. Muller, M. Reissner, W. Steiner and G. Wiesinger, Eds., ICAME Proceedings, Institute of Solid State Physics, Vienna, 19-24 July 2009, p. 297.

[15]   R. A. Brand, “NORMOS Program,” 1997, Unpublished.

[16]   M. A. Chuev, “Mossbauer Spectra of Single-Domain Par- ticles in a Weak Magnetic Field,” Journal of Physics: Condensed Matter, Vol. 20, No. 50, 2008, p. 10.

 
 
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