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In this sense, the debate on the structural stability of iridium under pressure has taken years. The study of the 5d metals under pressure have attracted the attention of the scientific community since the beginning of the 21 st century because of the relevance of their behaviour under extreme conditions for improving the knowledge of planet interiors 6. Whereby, its use in numerous applications make the study of Ir metal of great interest from a fundamental standpoint. Furthermore, Ir is being currently used to synthesize Ir-based double perovskite compounds and iridium-based transition metal oxides or iridates, and its application fields stand from high-temperature superconductivity 3, magnetoresistance 4, to multiferroicity 5. On the other hand, Ir is used for the construction of thermocouples and encapsulators of nuclear-powered electrical generators in space technology 2. These properties make Ir useful for many technological applications for instance, as a high-pressure gasket or as a pressure calibrant in high temperature and high-pressure (HP) diamond-anvil cell (DAC) experiments. On top of that, Ir has an extremely high thermal stability, being able to preserve mechanical stability at temperatures above 2000 ☌ and it is not easily susceptible to corrosion. It is the second densest elemental metal having an ambient pressure density of 22.65 g/cc at T = 0 K and 22.56 g/cc at T = 293.15 K, and a shear modulus, G o = 210 GPa, comparable to that of osmium, G o = 220 GPa, at ambient conditions 1. Iridium (Ir), with electronic structure 4d 105s 25p 64f 145d 76s 2, is one of the most incompressible 5d transition metals with face-centered cubic (fcc) structure. The remarkable agreement observed between experimental and calculated spectra validates the reliability of theoretical predictions of the pressure dependence of the electronic structure of iridium in the studied interval of compressions. X-ray absorption spectroscopy, which probes the local structure and the empty density of electronic states above the Fermi level, was also utilized. The compressibility behaviour was characterized by an accurate determination of the pressure-volume equation of state, with a bulk modulus of 339(3) GPa and its derivative of 5.3(1). Synchrotron-based powder x-ray diffraction results highlight a large stability range (up to 1.4 Mbar) of the low-pressure phase. Here, we report an experimental structural characterization of iridium by x-ray probes sensitive to both long- and short-range order in matter. In particular, iridium metal has been proposed to exhibit a recently discovered pressure-induced electronic transition, the so-called core-level crossing transition at the lowest pressure among all the 5d transition metals. Additional products added to your deal will affect the final price.The 5d transition metals have attracted specific interest for high-pressure studies due to their extraordinary stability and intriguing electronic properties. The Total Price is the Base Price plus estimated taxes and fees once a ZIP code is provided but is subject to change and may vary based on location of the Dealer and customer, inventory levels, vehicle features and available discounts and rebates. Driving range may vary based on model, terrain, temperature, driving style, optional equipment, use of vehicle features, and other factors.Īs a concept car, the designs, features, etc. See dealer for details.ĮPA estimated driving range with a fully charged battery. In some states, aftermarket trailer brakes are required. Your actual highway mileage will probably be less than the highway estimate. You may get different mileage depending on how fast you drive, weather conditions and trip length. Compare the estimated mpg to the estimated mpg of other vehicles. Stated rates of acceleration are based upon manufacturer's track results and may vary depending on model, environmental and road surface conditions, driving style, elevation and vehicle load.ĮPA estimated fuel economy. Actual vehicle price and availability may vary by Dealer and should be confirmed with the dealer selected by customer. MSRP for a base model prior to customer build also excludes charges for optional equipment, products, packages, and accessories. MSRP excludes transportation and handling charges, destination charges, taxes, title, registration, license, tag, preparation and documentary service fees, insurance charges, and Dealer add-on products, accessories and associated labor and installation charges. Starting price is MSRP, or Manufacturer’s Suggested Retail Price.