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<p>In this report, soft magnetic properties of amorphous and nanocrystalline (Fe<sub>1−<i>x</i></sub>Ni<sub><i>x</i></sub>)<sub>88</sub>Zr<sub>7</sub>B<sub>4</sub>Cu<sub>1</sub> alloys with <i>x</i> = 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8 and 1.0 have been studied. The rapidly solidified ribbons have been prepared using a vacuum melt spinning technique followed by annealing for obtaining nanocrystalline phases. The Curie temperature (<i>T</i><sub><i>c</i></sub>) of amorphous phase increases with Ni content upto <i>x</i> = 0.6 and decreases beyond <i>x</i> = 0.6. The saturation magnetisation of as-spun and high-temperature (620/720&#xa0;°C) annealed ribbons of (Fe<sub>1−<i>x</i></sub>Ni<sub><i>x</i></sub>)<sub>88</sub>Zr<sub>7</sub>B<sub>4</sub>Cu<sub>1</sub> alloy system shows a dip at around <i>x</i> = 0.35 which is termed as Invar behaviour. However, Invar behaviour is not observed in 450/500&#xa0;°C annealed ribbons due to the absence of fcc phase which becomes non-magnetic around <i>x</i> = 0.35 and is responsible for the dip in magnetisation. The coercivity of 620/750&#xa0;°C annealed ribbons is high as compared to as-spun and 450/500&#xa0;°C annealed ribbons due to the presence of Fe<sub>3</sub>Zr/Ni<sub>5</sub>Zr phases.</p>

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Magnetic Properties of Rapidly Solidified (Fe1−xNix)88Zr7B4Cu1 Alloys

  • 期刊论文

  • 发表日期：

    2025年1月6日

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  • Arvindha Babu Diraviam,
  • J. Arout Chelvane,
  • B. S. Murty,
  • Bhaskar Majumdar,
  • Manivel Raja Muthuvel

摘要

In this report, soft magnetic properties of amorphous and nanocrystalline (Fe1−xNix)88Zr7B4Cu1 alloys with x = 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8 and 1.0 have been studied. The rapidly solidified ribbons have been prepared using a vacuum melt spinning technique followed by annealing for obtaining nanocrystalline phases. The Curie temperature (Tc) of amorphous phase increases with Ni content upto x = 0.6 and decreases beyond x = 0.6. The saturation magnetisation of as-spun and high-temperature (620/720 °C) annealed ribbons of (Fe1−xNix)88Zr7B4Cu1 alloy system shows a dip at around x = 0.35 which is termed as Invar behaviour. However, Invar behaviour is not observed in 450/500 °C annealed ribbons due to the absence of fcc phase which becomes non-magnetic around x = 0.35 and is responsible for the dip in magnetisation. The coercivity of 620/750 °C annealed ribbons is high as compared to as-spun and 450/500 °C annealed ribbons due to the presence of Fe3Zr/Ni5Zr phases.