Lutetium Aluminum Garnet, Praseodymium-doped

See more Aluminum products. Aluminum (or Aluminium) (atomic symbol: Al, atomic number: 13) is a Block P, Group 13, Period 3 element with an atomic weight of 26.9815386. It is the third most abundant element in the earth's crust and the most abundant metallic element. Aluminum's name is derived from alumina, the mineral from which Sir Humphrey Davy attempted to refine it from in 1812. Aluminum was first predicted by Antoine Lavoisier 1787 and first isolated by Hans Christian Øersted in 1825. Aluminum is a silvery gray metal that possesses many desirable characteristics. It is light, nonmagnetic and non-sparking. It stands second among metals in the scale of malleability, and sixth in ductility. It is extensively used in many industrial applications where a strong, light, easily constructed material is needed. Although it has only 60% of the electrical conductivity of copper, it is used in electrical transmission lines because of its light weight. Pure aluminum is soft and lacks strength, but alloyed with small amounts of copper, magnesium, silicon, manganese, or other elements, it imparts a variety of useful properties.

See more Lutetium products. Lutetium (atomic symbol: Lu, atomic number: 71) is a Block F, Group 3, Period 6 element with an atomic weight of 174.9668. The number of electrons in each of Lutetium's shells is [2, 8, 18, 32, 9, 2] and its electron configuration is [Xe] 4f¹⁵ 5d¹ 6s². In its elemental form, lutetium has a silvery-white appearance. The lutetium atom has a radius of 174 pm and a Van der Waals radius of 221 pm. Lutetium was discovered and first isolated by Georges Urbain, Carl Auer von Welsbach and Charles James in 1906, all independently of each other. Urbain was awarded the naming honor because he published his findings first. Lutetium is the last member of the rare earth series. Unlike most rare earths it lacks a magnetic moment. It has the smallest metallic radius of any rare earth and it is perhaps the least naturally abundant of the lanthanides. The most common source of commercially produced lutetium is the mineral monazite. The name lutetium originates from the Latin word Lutetia, meaning Paris. Lutetium is found with almost all other rare earth metals, but it never occurs naturally by itself.

See more Praseodymium products. Praseodymium (atomic symbol: Pr, atomic number: 59) is a Block F, Group 3, Period 6 element with an atomic weight of 140.90765. The number of electrons in each of praseodymium's shells is 2, 8, 18, 21, 8, 2 and its electron configuration is [Xe]4f³ 6s². The praseodymium atom has a radius of 182 pm and a Van der Waals radius of 239 pm. Praseodymium resembles the typical trivalent rare earths, however, it will exhibit a +4 state when stabilized in a zirconia host. Unlike other rare-earth metals, which show antiferromagnetic and / or ferromagnetic ordering at low temperatures, praseodymium is paramagnetic at any temperature above 1 K. Praseodymium is found in the minerals monazite and bastnasite. Praseodymium was discovered by Carl Auer von Welsbach in 1885. The origin of the element name comes from the Greek words prasios didymos, meaning green twin.