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Electronic and magnon specific heat of iron-based tungsten alloys

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Abstract

Specific heat measurements between 0.5 and 2.4 K were carried out on pure Fe and five alloys with W (0.5, 1, 2, 5, and 10 at. % W). The electronic specific heat coefficient γ decreases linearly up to 5% W. For the 10% alloy the coefficient increased almost by a factor of two and a small term, constant in temperature, had to be included in the analysis of the data. A split-band model is believed to explain the decrease as well as the increase of γ. The existence of a magnon contribution to the specific heat was established in all the samples.

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The project was supported by Statens Naturvetenskapliga Forskningsråd through the contract Dnr 2627-6.

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Marklund, K., Hoel, L., Spåhr, K. et al. Electronic and magnon specific heat of iron-based tungsten alloys. J Low Temp Phys 5, 227–236 (1971). https://doi.org/10.1007/BF00629575

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Keywords

  • Tungsten
  • Magnetic Material
  • Heat Measurement
  • Small Term
  • Tungsten Alloy