Bulletin of Materials Science

, Volume 29, Issue 4, pp 391–396 | Cite as

Influence of nickel addition on magnetic and electro-mechanical behaviour of permalloys

  • Kiran Gupta
  • K. K. Raina
  • S. K. Sinha


Magnetic and electro-mechanical investigations have been carried out in two Ni-Fe permalloys under hydrogen atmosphere by varying annealing temperature. These alloys have been characterized for various magnetic parameters like peak permeability, coercivity and core loss under changed annealing profile conditions. The magnetic properties of Ni-rich (Ni ∼ 82%) alloy at 100 Hz were found to be better than the low Ni (Ni ∼47%) alloy. The alloys were tested for watch movement and found that the battery life of the watch movement improved by 38% using Ni-rich permalloy.


Ni-rich alloy low Ni alloy annealing temperature magnetic properties electro-mechanical behaviour 


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Copyright information

© Indian Academy of Sciences 2006

Authors and Affiliations

  • Kiran Gupta
    • 1
    • 2
  • K. K. Raina
    • 1
  • S. K. Sinha
    • 1
    • 2
  1. 1.School of Physics and Materials ScienceThapar Institute of Engineering & TechnologyPatialaIndia
  2. 2.National Research and Technology ConsortiumParwanooIndia

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