Samarium is a chemical element with the symbol Sm and atomic number 62. It belongs to the group of rare earth elements and is classified as a lanthanide. Samarium is a silvery-white metal that is relatively stable in air and can be found in minerals such as monazite and bastnäsite. This element is used in various applications, including magnets, lasers, and nuclear reactors. Samarium-cobalt magnets, for example, are known for their high strength and resistance to demagnetization. Additionally, samarium is utilized in certain types of glass and ceramics to improve their properties.