Brillouin light scattering. (News Briefs).NIST (National Institute of Standards & Technology, Washington, DC, www.nist.gov) The standards-defining agency of the U.S. government, formerly the National Bureau of Standards. It is one of three agencies that fall under the Technology Administration (www.technology. scientists have recently implemented a Brillouin light scattering facility for characterizing acoustic and magnetic waves in thin-film and bulk materials. This system is capable of measurements in the 3 GHz to 300 GHz range with sampling volumes less than 50 [micro]m in diameter and a few hundred nanometers in depth, thus enabling detailed measurements on micron-scale patterned thin-film structures. Because it can selectively detect both acoustic and magnetic waves, Brillouin light scattering can provide unique information on the coupling between magnetic states and thermal phonons. The initial research using this system is focused on measurements of ferromagnetic Refers to a material, such as iron and nickel, that can be easily magnetized. See MRAM. thin films with the goal of providing information on damping damping In physics, the restraint of vibratory motion, such as mechanical oscillations, noise, and alternating electric currents, by dissipating energy. Unless a child keeps pumping a swing, the back-and-forth motion decreases; damping by the air's friction opposes the mechanisms that limit the switching times of magnetic memory elements, a project partly funded under the NIST Nanotechnology Initiative. CONTACT: Donna Hurley Hurley has become the English version of at least three distinct original Irish names: the Ó hUirthile, part of the Dál gCais tribal group, based in Clare and North Tipperary; the Ó Muirthile, based around Kilbritain in west Cork; and the OhIarlatha, from the district of , (303) 497-3081; hurley@boulder.nist.gov. |
|
||||||||||||||||||
Printer friendly
Cite/link
Email
Feedback
Reader Opinion