Loading...
  • tantalum
  • Of course, the easiest thing would be to look in the archives Chadwick results of measurement of the nuclear charge at the platinum, their departur es and decide on the need to work with hafnium, tantalum and lutetium. (blogspot.com)
  • isotopes
  • Out of six naturally occurring isotopes of hafnium ( 174 Hf, 176 Hf, 177 Hf, 178 Hf, 179 Hf and 180 Hf), radiogenic 176 Hf is produced by the β- decay of 176 Lu with a half-life of 37.2 billion years in terrestrial samples (decay constant λ = 1.865 × 10 -11 y -1 ) (Scherer et al. (springeropen.com)
  • From their analysis of the literature, the researchers found that rocks high in lutetium and samarium isotopes likely formed before Australia collided with the islands. (phys.org)
  • oxide
  • Embodiments of a dielectric layer containing a hafnium titanium oxide film structured as one or more monolayers include the dielectric layer disposed in an integrated circuit. (google.com)
  • controlling pulsing parameters, pressure within the reaction chamber, and temperature of the substrate such that the pulsing parameters, the pressure within the reaction chamber, and the temperature of the substrate are selected, individually for each precursor, to form hafnium titanium oxide (Hf x Ti y O z , where x, y, and z are numbers greater than zero) in the cycle of the atomic layer deposition. (google.com)
  • 2. The method of claim 1 , wherein forming the hafnium titanium oxide film by atomic layer deposition includes forming the hafnium titanium oxide film on a substrate with the substrate maintained at a temperature of about 600 C. or less. (google.com)
  • 3. The method of claim 1 , wherein forming a dielectric layer includes forming the dielectric layer substantially of the hafnium titanium oxide film. (google.com)
  • 6. The method of claim 1 , wherein forming the hafnium titanium oxide film by atomic layer deposition includes forming the hafnium titanium oxide film having a hafnium to titanium ratio ranging from about 0.5 to about 2.5. (google.com)
  • 10. The method of claim 1 , wherein forming the hafnium titanium oxide film by atomic layer deposition includes using a TiR precursor and a HfR precursor, where R is one or more elements. (google.com)
  • element
  • Lutetium is sometimes considered the first element of the 6th-period transition metals , although lanthanum is more often considered as such. (rug.nl)
  • He chose the name lutecium for the new element, but in 1949 the spelling of element 71 was changed to lutetium. (rug.nl)
  • Lutetium usually occurs in association with the element yttrium [ citation needed ] and is sometimes used in metal alloys and as a catalyst in various chemical reactions. (rug.nl)
  • The researchers identified two main isotopic systems in the region's rocks: one in which the element lutetium decays to hafnium, and another in which samarium decays to neodymium. (phys.org)
  • found
  • The team then measured the ratios of strontium to neodymium, and lutetium to hafnium, to determine the presence of a collision, keeping track of where each zircon was originally found (along the region's northern or southern border). (phys.org)
  • Hafnium is a good absorber of neutrons and is used to make control rods, such as those found in nuclear submarines. (rsc.org)
  • Chemical
  • Building the table on these grounds, we are forced, after lutetium and Lawrence left four empty seats, so that the chemical properties of elements. (blogspot.com)
  • particularly
  • This is particularly important where hafnium purification is unavailable prior to sample introduction to the ion source, as in the case of laser ablation analysis. (springeropen.com)
  • made
  • Four new determinations of the lutetium-176 decay constant (λ 176 Lu) made by calibration against the uranium-lead decay schemes yield a mean value of 1.865 ± 0.015 × 10 −11 year −1 , in agreement with the two most recent decay-counting experiments. (sciencemag.org)
  • solutions
  • Aqueous solutions of most lutetium salts are colorless and form white crystalline solids upon drying, with the common exception of the iodide. (rug.nl)