Measurement of an Iso‐Curie Temperature Line of a CoCrMo Solid Solution by Magnetic Force Microscopy Imaging on a Diffusion Multiple

Abstract The 24 °C iso‐Curie temperature line of a CoCrMo fcc solid solution is obtained by performing magnetic force microscopy (MFM) imaging on solid solution compositions created in a diffusion multiple. The MFM imaging clearly reveals the boundary that separates the paramagnetic region without magnetic domains from the ferromagnetic region with domains. Compositional analysis along the boundary yields a constant Curie temperature (24 °C) composition line. Such a measurement is more efficient than one‐alloy‐at‐a‐time tests and can be used to screen new ferromagnetic materials.