Mössbauer Spectroscopic Analysis of Nd2Fe14B/α-Fe Hard Magnetic Nanocomposites

Bozidar Cekić; Valentin Ivanovski; Mirela Maria Codescu; Ana Umićević; Tanja Barudzija; Eros Alexandru Pătroi

doi:10.4028/www.scientific.net/SSP.170.154

Paper Titles

Anisotropy of Photoluminescence in Layered Semiconductors ReS₂ and ReS₂:Au
p.135

Amorphous Shell Formation on the Iron Particles during Mechanosynthesis in Fe₂O₃/Fe/(Ga,Al) Mixtures
p.139

Replacement of Vanadium by Ferrovanadium in Ti-Based BCC Alloys for Hydrogen Storage
p.144

Synthesis and Physical Properties of (Na_xRE_1-x)AlB₁₄ (RE=Li, Mg, Rare Earths) Obtained by Molten Al Flux
p.150

Mössbauer Spectroscopic Analysis of Nd₂Fe₁₄B/α-Fe Hard Magnetic Nanocomposites
p.154

Influence of Surface Active Substances on Magnetic Properties of Goethite Nanoparticles
p.160

Structural, Superconducting and Magnetic Properties of La_3-XR_xNi₂B₂N_3-δ with R = Ce, Pr, Nd
p.165

Hybridized Electronic States in Dense Intermetallics as Studied by ESR
p.170

The Pyrrhotite 32 K Magnetic Transition
p.174

HomeSolid State PhenomenaSolid State Phenomena Vol. 170Mössbauer Spectroscopic Analysis of Nd2Fe14B/α-Fe...

Mössbauer Spectroscopic Analysis of Nd₂Fe₁₄B/α-Fe Hard Magnetic Nanocomposites

Abstract:

Among novel magnetic intermetallics based on rare earth-transition compounds, the Nd2Fe14B/α-Fe isotropic nanocomposites have been obtained by recrystallization from an amorphous phase, prepared by melt spinning. For variable 5 wt.% Fe and 10 wt.% Fe contents we recorded transmission 57Fe Mössbauer spectra at the room temperature, hardened of the α-Fe phase by exchange interactions. The spectra have been analyzed in terms of ten Zeeman sextets and one paramagnetic doublet related to the Nd1.1Fe4B4 phase. One sextet corresponds to the α-Fe phase, whereas others are attributed to six non-equivalent Fe sites in the Nd2Fe14B structure, namely 16k1, 16k2, 8j1, 8j2, 4c, and 4e. The three remaining sextets belong to the Fe3B structure with three inequivalent Fe sites FeI(8g), FeII(8g) and FeIII(8g). All relevant parameters for both nanocomposites: the magnetic hyperfine field, the isomer shift and the quadrupole splitting are determined for each of these sites.

You might also be interested in these eBooks

Solid Compounds of Transition Elements I

View Preview

Info:

Periodical:

Solid State Phenomena (Volume 170)

Pages:

154-159

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.170.154

Citation:

Cite this paper

Online since:

April 2011

Authors:

Bozidar Cekić, Valentin Ivanovski, Mirela Maria Codescu, Ana Umićević, Tanja Barudzija, Eros Alexandru Pătroi

Keywords:

Internal Magnetic Field, Magnetic Nanocomposite, Mössbauer Spectrometer, Quadrupole Splitting, XRD Analysis

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] R. Fruchart, P. L'Heritier, P. Dalmas de Reotier, D. Fruchart, P. Wolfers, J.M.D. Coey, L.P. Fereira, R. Guillen, P. Vulliet and A. Yaouanc: J. Phys. F Vol. 17 (1987), p.483.

DOI: 10.1088/0305-4608/17/2/017

Google Scholar

[2] J. Bauer, M. Seeger, A. Zern and H. Kronmüller: J. Appl. Phys. Vol. 80 (1996), p.1667.

Google Scholar

[3] E.F. Kneller and R. Hawig: IEEE Trans. Magn. Vol. 27 (1991), p.3588.

Google Scholar

[4] A. Jianu, M. Valeanu, D. Lazar, F. Lifei, M. Tomut, V. Pop and S. Alexandru: Rom. Rep. Phys. Vol. 56, 3 (2004), p.385.

Google Scholar

[5] H.A. Davies: J. Magn. Magn. Mater. Vol. 157-158 (1996), p.11.

Google Scholar

[6] A. Manaf, R.A. Buckley and H.A. Davies: J. Magn. Magn. Mater. Vol. 128 (1993), p.302.

Google Scholar

[7] J.F. Herbst and J.J. Croat: J. Magn. Magn. Mater. Vol. 101 (1991), p.360.

Google Scholar

[8] W. Kappel and M.M. Codescu: Rom. J. Phys. Vol. 49, 9-10 (2004), p.733.

Google Scholar

[9] R.A. Brand: Nucl. Instrum. Meth. B Vol. 28 (1987), p.398.

Google Scholar

[10] R. Coehoorn, D.B. de Mooij and C. De Waard: J. Magn. Magn. Mater. Vol. 80 (1989), p.101.

Google Scholar

[11] X.J. Yin, I.P. Jones and I.R. Harris: J. Magn. Magn. Mater. Vol. 125 (1993), p.91.

Google Scholar

[12] S.C. Wang and Y. Li: J. Mater. Sci. Vol. 40 (2005), p.3853.

Google Scholar

[13] R. Kamal and Y. Andersson: Phys. Rev. B Vol. 32 (1985), p.1756.

Google Scholar

[14] C.J. Yang and E.B. Park: J. Magn. Magn. Mater. Vol. 166 (1997), p.243.

Google Scholar