Method in order to produce the variable emissivity material and the variable emissivity material, and method in order to control the temperature of the space ship

摘要

Tunable variable emissivity materials, methods for fabricating tunable variable emissivity materials and methods for controlling the temperature of a spacecraft using tunable variable emissivity materials have been provided. In an exemplary embodiment and a variable emissivity material has the formula M1 (1− (X+y))M2xM3yMnO3, wherein M1 comprises lanthanum, praseodymium, scandium, yttrium, neodymium or samarium, M2 comprises an alkali earth metal, M3 comprises an alkali earth metal that is not M2 and x, y and (x+y) are less than 1. The material has a critical temperature (Tc) in the range of about 270 to about 320K and a transition width is less than about 30K.