NEGATIVE THERMAL EXPANSION MATERIAL, NEGATIVE THERMAL EXPANSION THIN FILM AND PREPARATION METHOD THEREFOR

摘要

Disclosed are a negative thermal expansion material, and a preparation method therefor, wherein the negative thermal expansion material comprises Eu _0.85Cu _0.15Mn _3-δ, wherein 0≤ δ ≤2, and a thin film prepared by using the negative thermal expansion material and a preparation method for the thin film.