curie-temperature-distribution · research · also Curie temperature dispersion, Tc distribution

Curie-temperature distribution

Curie-temperature distribution is the spread of ferromagnetic transition temperatures across the grains of a recording medium.

Related Observatory article: Curie-temperature distribution on hesela.com

Grain-size variation can produce this spread through finite-size effects [1]. It is not the spatial temperature variation created by the laser. The cited FePt study used nominally 10 nm-high grains with lateral sizes from 1 to 10 nm and repeated each Monte Carlo calculation 20 times; its small-grain crossover is specific to the modeled geometry. State whether a reported spread is in kelvin or normalized to a mean.

Relations

related
hamr, hamr-thermal-gradient, transition-jitter

Citations

  1. Binh, Ruta, Hovorka, Evans and Chantrell: The Influence of Finite-size Effects on the Curie Temperature of L10-FePt, arXiv:2207.11831v1 (2022); section III, Tables 1-2 and Figure 7 (accessed 2026-10-16)

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