Role of excess manganese in the formation of properties of nanometer-sized manganite powders

It has been revealed for the first time that the introduction of excess manganese to a charge when preparing nanometer-sized manganite powders exhibiting the colossal magnetoresistance effect leads to the formation of a single-phase material with the crystallite sizes 15–25 nm that are two time smaller than those in manganite powders produced without excess manganese.