by Iowa State University .
Written in English
Gadolinium and Terbium: Chemical and Optical Properties, Sources and Applications (Chemistry Research and Applications) [Lorrie P. Wilder] on *FREE* shipping on qualifying offers. Terbium (Tb) is a soft, malleable, silvery white rare earth metal. It is primarily used in solid state devicesAuthor: Lorrie P. Wilder. Terbium is a chemical element with the symbol Tb and atomic number It is a silvery-white, rare earth metal that is malleable, ductile, and soft enough to be cut with a ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas. Terbium is never found in nature as a free element, but it is contained in many Pronunciation: /ˈtɜːrbiəm/ (TUR-bee-əm). Gadolinium. Gadolinium is a soft, shiny, ductile, silvery metal belonging to the lanthanide group of the periodic chart. The metal does not tarnish in dry air but an oxide film forms in moist air. Gadolinium reacts slowly with water and dissolves in acids. Gadolinium becomes superconductive below K. It is strongly magnetic at room temperature. Complexes of the element gadolinium (Gd) are the most widely used of all MR contrast agents. Because of its unique electronic structure (described below), Gd is strongly paramagnetic. Paramagnetism is an intrinsic property of certain materials to become temporarily magnetized when placed in an external magnetic fact, Gd is one of only four elements that can be magnetized at room.
Holmium is a chemical element with the symbol Ho and atomic number Part of the lanthanide series, holmium is a rare-earth element.. Holmium was discovered through isolation by Swedish chemist Per Theodor Cleve and independently by Jacques-Louis Soret and Marc Delafontaine who observed it spectroscopically in Its oxide was first isolated from rare-earth ores by Cleve in Pronunciation: /ˈhoʊlmiəm/ (HOHL-mee-əm). Magnetization measurements in d.c. magnetic fields up to kOe have been performed on polycrystalline specimens and on single crystals of mixed terbium-yttrium iron garnets: Tb x Y3−x Fe5O12 in the – K temperature range. On polycrystals (x=; 2; 1; ) the concentration dependence of both compensation point and spontaneous magnetization has been by: When a sample of material is placed in a magnetic field, H, a magnetic moment per gram, a, results. The moment is related to the applied field by the relationship ffi = (Xg)ijHj () The magnetic susceptibility, Xg, is a tensor in anisotropic substances such as the holmium single crystals used in this investigation. Many investigations deal with the magnetic properties of gadolinium. /86/$ Elsevier Science Publishers B.V. (North-Holland Physics Publishing Division) It is shown in ref.  that the field dependences of magnetization of gadolinium at helium temperatures attains saturation in the field of the order of 25 kOe both along the Cited by:
Properties of gadolinium. Gadolinium, a member of the lanthanides group of elements, is malleable, silvery white element and has a metallic sheen, Author: Live Science Staff. The thermal conductivities of gadolinium, terbium, and holmium single crystals have been measured as a function of temperature from 5° to °K. The steady-state heat flow method was used. The longitudinal and transverse acoustic velocities and the ultrasonic attenuations in high-purity polycrystalline gadolinium, terbium, dysprosium, holmium, and erbium metals have been measured by. It is shown on the basis of the experimental data on the anisotropy of the paramagnetic Curie points that the magnetic anisotropy in the terbium-gadolinium alloys is .