USE OF SPINEL FERRITES AS SENSITIVE MATERIAL FOR BOLOMETRIC INFRARED DETECTION DEVICES

摘要

Use of a ferrite spinel (I) as sensitive material, when formed as a thin layer, for bolometric detection of infrared (IR) radiation. - Use of a ferrite spinel (I) as sensitive material, when formed as a thin layer, for bolometric detection of infrared (IR) radiation. (I), excluding any dopants, has formula Fe3(x+y)MxAyO4+d (I) where Fe is the major metallic element and both metal and oxygen are present as ions - M = at least one transition metal other than Fe; - A = at least one of Mg and Al; - x = 0-2 but must be smaller than 3-x-y; - y = 0-0.5; - d = 0 or positive number, low enough for (I) to contain at least one metal as ions in two different oxidation states and situated in the same sub-lattice of the spinel structure - . Independent claims are also included for: - (a) bolometric device for detecting IR radiation and for IR imaging containing at least one sensor that includes a thin layer of (I) as sensing component; and - (b) process for detecting IR, or for IR imaging, using the device of (1).