NOVELTY - Solution of fine particles of a multi-element ceramic comprises: a liquid; and fine particles of a multi-element ceramic (10) having at least three elements and an average particle size of 1-5000 nanometers in diameter dispersed in the liquid, where the fine particles are derived from a bulk material of the multi-element ceramic having at least 3 elements by ultrashort-pulsed-laser-fragmentation processing using pulses having a pulse duration of less than or equal to 500 picoseconds and the fine particles retain the chemical composition and crystalline structure of the bulk material.    USE - The solution of fine particles of a multi-element ceramic is useful as phosphorus ceramics, light-absorbing ceramics including sunlight absorbing materials in solar cells, and ceramic ionic conductors which can be used in a fuel cell, where the phosphors are useful in e.g. emission devices, plasma display panels, cathode ray tubes, LEDs, vacuum florescent displays, electro luminescence displays, radiographic imaging, nuclear spectroscopy, crystal scintillators and biotags.    ADVANTAGE - The solution of fine particles of a multi-element ceramic is: stable colloid from which the particles can be isolated or used as is; and prepared from a bulk material, which reduces production cost associated with a large amount of intermediate treatments.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) fine particles of the multi-element ceramic comprising fine particles of the multi-element ceramic as above per se; and    (2) a method of fabricating the solution of fine particles of the multi-element ceramic comprising: (a) providing the bulk target material of a multi-element ceramic comprising at least three elements with at least a portion of the target material being in contact with at least a portion of a liquid; and (b) irradiating the target material with an ultrashort-pulsed-laser-fragmentation beam having a pulse duration of less than or equal to 500 picoseconds and forming fine particles of the multi-element ceramic having an average diameter of 1-5000 nanometers, where the fine particles retain the chemical composition and crystalline structure of the bulk target material.    DESCRIPTION OF DRAWING(S) - The figure shows the schematic illustration of an ultrafast-pulsed laser system for producing phosphor fine particles in a liquid.    Laser beam (1)    Lens (2)    Guide mechanism (3)    Target (4)    Fine phosphor particles (10)