Results 201 to 210 of about 3,150 (261)
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Use of hafnium(IV) oxide in biosensors
Journal of Immunoassay and Immunochemistry, 2018Hafnium(IV) oxide is a material with properties that can increase the sensitivity, durability, and reliability of biosensors made from silicon dioxide and other semiconductor materials due to its high dielectric constant, thermodynamic stability, and the simplicity with which it can be deposited.
Luis CARLOS Ortiz-Dosal +2 more
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Investigation of Heterostructures Based on Hafnium Oxide
Bulletin of the Russian Academy of Sciences: Physics, 2023We presented ab initio calculations of bulk structures and thin films of hafnium oxide, and heterostructures based on hafnium oxide in the tetragonal phase and silicon, structural and electronic properties are investigated. The density of states spectra is considered, the results obtained are analyzed, and some of them are compared with previously ...
Y. I. Sharifullina +3 more
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Acta Metallurgica, 1957
Abstract Hafnium oxidation rates at 760-mm oxygen pressure in the temperature range 350°–1200°C have been represented by logarithmic, parabolic, and linear-rate equations. The respective activation energies for the rate constants were 11.4, 36.0, and 26.1 kcal/mole.
W.W Smeltzer, M.T Simnad
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Abstract Hafnium oxidation rates at 760-mm oxygen pressure in the temperature range 350°–1200°C have been represented by logarithmic, parabolic, and linear-rate equations. The respective activation energies for the rate constants were 11.4, 36.0, and 26.1 kcal/mole.
W.W Smeltzer, M.T Simnad
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Auger parameter of hafnium in elemental hafnium and in hafnium oxide
Surface Science, 2004Abstract X-ray photoelectron spectroscopy has been used to determine the Auger parameters in elemental hafnium and in hafnium oxide (HfO2). The zirconium Lα line has been used as a source of excitation to study the 3d core levels of hafnium, the 1s core level of oxygen, and the X-ray excited MNN Auger region of hafnium and KVV Auger region of oxygen.
A.R. Chourasia, R.L. Miller
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Crystallinity and Defects in Hafnium Oxide and Hafnium Silicate Films
ECS Meeting Abstracts, 2006Abstract not Available.
Nhan Nguyen +10 more
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Nanoscale Radiotherapy with Hafnium Oxide Nanoparticles
Future Oncology, 2012There is considerable interest in approaches that could improve the therapeutic window of radiotherapy. In this study, hafnium oxide nanoparticles were designed that concentrate in tumor cells to achieve intracellular high-energy dose deposit.Conventional methods were used, implemented in different ways, to explore interactions of these high-atomic ...
Laurence, Maggiorella +7 more
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Long time transients in hafnium oxide
Microelectronic Engineering, 2007In this work characterization of HfO"2 films in transient regime is presented. Charge trapping and detrapping, and degradation transients were investigated at long times while monitoring gate current or voltage. As for charge trapping, a logarithmic dependence on time was found.
PUZZILLI, Giuseppina, IRRERA, Fernanda
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Atomic scale study of oxidation of hafnium: Formation of hafnium core and oxide shell
Journal of Applied Physics, 2006Perturbed angular correlation studies on hafnium foil subjected to annealing in oxygen atmosphere show that there exists three distinct Hf sites which are identified as probe atoms associated with hafnium metallic clusters, hafnium oxide, and oxygen deficient oxide zones. Kinetics of oxidation has been studied.
R. Govindaraj +2 more
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