Effect of the Zr-substitution on the Structural and Magnetic Properties of SmFe10Si2 System | Chapter 4 | Fundamental Research and Application of Physical Science Vol. 2

 Structural and magnetic characterization of melt-spun ribbons of Sm_1-xZr_xFe₁₀Si₂ (0.1 ≤ x ≤ 0.6) has been studied using X-ray diffraction and Mössbauer spectroscopy. The formation of the tetragonal ThMn₁₂-type structure has been observed in all alloys, without further annealing. Unit cell parameters are changing gradually with the incorporation of Zr; however, a and c parameters are affected in different degree due to the preference of Zr for RE atomic positions and thus the c/a ratio is increasing. The Curie temperature decreases linearly with Zr substitution from 595 K for x=0.1 to 668 K for x=0.6. The saturation magnetization does not change appreciably in the interval from x=0.1 (123.9 Am²/kg) to x=0.5 (126.0 Am²/kg), but then decreases to 94 Am²/kg for x=0.6. ⁵⁷Fe Mössbauer Spectroscopy on magnetically aligned samples revealed that Zr introduction affects magnetocrystalline anisotropy.

Author(s) Details:

M. Gjoka,
INN, NCSR Demokritos, Athens 15310, Greece.

C. Sarafidis,
School of Physics, Aristotle University of Thessaloniki, Thessaloniki-54124, Greece.

V. Psycharis,
INN, NCSR Demokritos, Athens 15310, Greece.

E. Devlin,
INN, NCSR Demokritos, Athens 15310, Greece.

D. Niarchos,
INN, NCSR Demokritos, Athens 15310, Greece and AMEN New Technologies, Athens, Greece.

G. Hadjipanayis,
Department of Physics, U of Delaware, Newark, USA.

Please see the link here: https://stm.bookpi.org/FRAPS-V2/article/view/10146