ChemInform Abstract: Magnetovolume Effects in Ternary Compounds of the Type RFe12-xTx and R2Fe14C (R: Rare Earth, T: Ti, V, Cr, Mo, W, Si).

ChemInform Abstract

Thermal expansion is measured in the temp. range 300-1000 K for several ternary compounds with ThMn₁₂-type structure (RFe₁₀V₂ (R: Nd, Sm, Gd, Tb, Ho, Er, Y), YFe₁₀Mo₂, and YFe_10.8Ti_1.2) and for compounds with Nd₂Fe₁₄B-type structure (R₂Fe₁₄C (R: Nd, Gd-Er, Lu) and Lu₂Fe₁₄B). ThMn₁₂-type compounds, in which considerable magnetic disorder is present, exhibit a smaller thermal expansion anomaly than Nd₂Fe₁₄B-type compounds. For some compounds very small thermal expansion coefficients are found in the temp. range 20-280 °C indicating that these materials may be good candidates for application as Invar-type alloys.