| abstract |
A single crystal essentially consists of XM z M' 1 -z P 4 O 12 , (0<z≦1) in which X is lithium and/or sodium, M is neodymium, and M' is yttrium, lanthanum or gadolinium. n Said single crystal can be used as a dielectric active medium for lasers, and can be prepared in the form of a bar having a square cross section measuring 5 mm on each side by the top-seeded solution growth method. |