Influence of spin fluctuations on thermodynamics of itinerant-electron metamagnetic transition in La(Fe0.88Si0.12)13 compound

Abstract Thermodynamic properties of the itinerant-electron metamagnetic (IEM) transition in La(Fe 0.88 Si 0.12 ) 13 compound are discussed. Both the transition field B C and the change in magnetization at the transition Δ M show the thermal variation expected from the theory for the magnetic free energy renormalized by spin fluctuations. The latent heat Δ Q obtained from B C and Δ M agrees with that obtained from heat capacity under magnetic field. Therefore, the thermal variation of Δ Q mainly comes from the magnetic contribution influenced by spin fluctuations.