RUS  ENG
Full version
JOURNALS // Fizika Tverdogo Tela // Archive

Fizika Tverdogo Tela, 2018 Volume 60, Issue 12, Pages 2483–2486 (Mi ftt8993)

Thermal properties

Thermal expansion of Fe$_{2}Me$Al ($Me$ = Ti, V, Cr, Mn, Fe, Co, Ni) band ferromagnets

N. I. Kourova, V. A. Kazantseva, Yu. A. Perevozchikovaa, V. V. Marchenkovab

a Institute of Metal Physics, Ural Division of the Russian Academy of Sciences, Ekaterinburg
b Ural Federal University named after the First President of Russia B. N. Yeltsin, Ekaterinburg

Abstract: The thermal expansion coefficient (TEC) of Fe$_{2}Me$Al ($Me$ = Ti, V, Cr, Mn, Fe, Co, Ni) band ferromagnets is measured in the temperature interval of 80–900 K. The magnetic-fluctuation contribution $\alpha_{m,sf}(T)=\alpha_ m(T)+\alpha_{sf}(T)$ to TEC comprised of negative Stoner $\alpha_m(T)$ and positive spin-fluctuation $\alpha_{sf}(T)$ contributions is presented. It is assumed that the contribution of $\alpha_m(T)$ component is proportional to the square of spontaneous magnetization. The contribution of $\alpha_{sf}(T)$ is stipulated by the effects of inducing local magnetic moments by spin fluctuations and is proportional to the Pauli susceptibility.

Received: 05.06.2018

DOI: 10.21883/FTT.2018.12.47360.153


 English version:
Physics of the Solid State, 2018, 60:12, 2678–2681

Bibliographic databases:


© Steklov Math. Inst. of RAS, 2024