Study of the Effect of Boron Concentration on Magnetic and Structural Properties of Nd_{7.5}Pr_{2.5}Fe_{90-x}B_x Melt-Spun Alloys

• Authors: M. Siddique , I. Ahmad , M. Kanwal , E. Ahmed
• Languages of publication: EN

Abstracts

EN

The Mössbauer spectroscopy and X-ray diffraction techniques have been used to investigate the effect of boron concentration on the structural and magnetic properties of as-quenched and heat-treated melt-spun alloys Nd_{7.5}Pr_{2.5}Fe_{90-x}B_x (x=6, 8, 10) produced by melt-spinning technique. X-ray diffraction and Mössbauer spectroscopy results indicate that as-prepared samples are completely amorphous in nature. The X-ray diffraction patterns of samples heat-treated at 700°C are indexed as Fe_{3}B, α -Fe, (NdPr)_{2}Fe_{14}B and Fe_{23}B_{6} phases. The Mössbauer spectra of heat-treated samples are very complex and constituted a number of sextets and a quadrupole doublet. Two main phases are (NdPr)_{2}Fe_{14}B hard and t-Fe_{3}B soft magnetic phases while α -Fe and Nd_{23}Fe_{6} are detected as minor phases. The average internal magnetic field decreases with the increase of boron content; more sharply in as-prepared and comparatively slowly in heat-treated samples. The X-ray diffraction and Mössbauer spectroscopy results are in good agreement with each other.

Keywords

EN

76.80.+y; 75.50.-y; 61.43.-j; 61.05.C-

Discipline

• 61.43.-j: Disordered solids(see also 81.05.Gc Amorphous semiconductors, 81.05.Kf Glasses, and 81.05.Rm Porous materials; granular materials in materials science; for photoluminescence of disordered solids, see 78.55.Mb and 78.55.Qr)
• 75.50.-y: Studies of specific magnetic materials
• 76.80.+y: Mössbauer effect; other γ-ray spectroscopy(see also 33.45.+x Mössbauer spectra—in atomic and molecular physics; for biophysical applications, see 87.64.kx; for chemical analysis applications, see 82.80.Ej)
• 61.05.C-: X-ray diffraction and scattering(for x-ray diffractometers, see 07.85.Jy; for x-ray studies of crystal defects, see 61.72.Dd, Ff)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 128
• Issue: 3
• Pages: 353-357

Dates

published

2015-09

received

2013-03-28

(unknown)

2015-07-08

Contributors

author

M. Siddique

• Physics Division, PINSTECH, P.O. Nilore, Islamabad, Pakistan

author

I. Ahmad

• Department of Physics, B.Z. University, Multan, 60800, Pakistan

author

M. Kanwal

• Department of Physics, B.Z. University, Multan, 60800, Pakistan

author

E. Ahmed

• Physics Division, PINSTECH, P.O. Nilore, Islamabad, Pakistan

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Identifiers

DOI

10.12693/APhysPolA.128.353