TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Process: The quantities of lanthanum, element (T) and manganese in the starting charge are determined so that the molten product undergoes neither a thermal treatment of annealing after cooling, nor a grinding, is present in the form of a block with a thickness of greater than 1 mm, preferably greater 5 cm or in the form of a particle with a size of less than 4 mm. The melting step is done using an arc furnace when the molten product is in the form of a particle, or an induction furnace when the molten product is a block. The process comprises annealing of the molten product. The annealing is done at 1050-1400 degrees C for at least 30 minutes, in which the point when the total molten product reaches the temperature level being the starting point of annealing. The annealing is done in an atmosphere containing at least 20 vol.% of oxygen. The cooling step comprises dispersing the molten liquid in the form of liquid droplets and solidifying the liquid droplets by contacting with an oxygenated fluid, to obtain molten particles. The dispersing step and/or solidifying step is done by contacting the molten liquid with oxygenated fluid comprising at least 20 vol.% of oxygen. The dispersing and solidifying steps are carried out simultaneously. The contacting of the droplets and oxygenated fluid is maintained until the solidification of the droplets is completed. The dispersing step comprises casting of the molten liquid in a mold, solidifying by cooling of casted liquid in the mold until a partially solidified block is obtained and demolding the block. The process comprises contacting the molten liquid with the oxygenated fluid (in)directly during the solidification in the casting step and/or solidifying and/or after demolding step. The contact is started immediately after demolding of the block and is maintained until the complete solidification of the block. The demolding is carried out before the complete solidification of the block. The demolding of the block is done when the block exhibits sufficient rigidity to retain its shape. The cooling speed of molten liquid is less than 1000 K/s, during the solidification. The demolded block, optionally annealed, is reduced into pieces or powder. Preferred Components: The perovskite exhibits a molar content i.e. lp, tp and mp of lanthanum (L), the element (T) and manganese (M), respectively according the formula i.e. x = tp/(lp + tp) and y = 1 - (lp + tp)/mp, where x is greater than 0 and/or less than or equal to 0.5, preferably greater than or equal to 0.15 and/or less than 0.25 and y is - 0.1-0.24, preferably greater than or equal to 0. The rate of (LTM) perovskite in the molten product is greater than 50%, preferably greater than 99.9%, apart from impurities. The perovskite is a lanthanum-strontium-manganese perovskite of formula (La1-xSrx)1-yMnO3, with the conditions that x is greater than 0 and less than or equal to 0.5, preferably greater than 0.15 and less than 0.25 and y is greater than or equal to - 0.05- less than or equal to 0.24, preferably greater than or equal to 0- less than or equal to 0.1. The element (T) is a lanthanum dope comprising calcium, strontium, barium and/or magnesium. The molten product has a chemical composition (in wt.%) of lanthanum oxide (36-70.7, preferably 53.9-61.6), strontium oxide (0-25.8, preferably 6.7-11.8), manganese oxide (29.3-41.2, preferably 31.5-34.7) and impurities (less than 0.7), where the total makes 100%. The molten product undergoes neither a thermal treatment of annealing after cooling, nor a grinding. The molten product is present in the form of a block with a thickness of greater than 1 mm, preferably greater 5 cm. The molten product is in the form of a particle with a size of less than 4 mm. The total content of (LTM) in the constituents of the starting charge is greater than 90 wt.%, preferably greater than 99 wt.%. The total content of (LTM) together with impurities is 100% of the constituents of the starting charge. The compounds of the perovskite are strontium oxide, strontium carbonate, lanthanum oxide, calcium oxide, calcium carbonate, yttrium oxide, ytterbium oxide, magnesium oxide, magnesium carbonate, cerium dioxide, barium oxide, manganese dioxide, manganese oxide or trimanganese tetroxide. The oxygenated fluid is a gas, preferably air. EXAMPLE - No suitable example given.