Results 11 to 20 of about 12,666 (244)

Measurement and analysis of the resolved resonance cross sections of the natural hafnium isotopes [PDF]

open access: yes, 2010
Hafnium is a ductile metallic element with a large neutron absorption cross section. It can be used in reactor control rods to regulate the fission process. The NEA High Priority Request List for nuclear data presents a need for improved characterisation
Ware, Timothy Christopher
core   +7 more sources

Structure, Properties, and Reactivity of Polyoxocationic Zirconium and Hafnium Clusters [PDF]

open access: yes, 2022
Hexameric tetravalent zirconium and hafnium molecular metal oxides clusters are key building blocks of many metal-organic frameworks; however, the chemical space to form all possible MOF nodes is vast, containing many potential new clusters.
Ethan, Hare   +2 more
core   +2 more sources

Assessing Origins of End‐Triassic Tholeiites From Eastern North America Using Hafnium Isotopes

open access: yesGeochemistry, Geophysics, Geosystems, 2020
The driving processes responsible for producing the Central Atlantic Magmatic Province, the Large Igneous Province associated with end‐Triassic rifting of Pangea, remain largely debated.
Lynne J. Elkins   +4 more
doaj   +1 more source

Crystal structure of (1,3-di-tert-butyl-η5-cyclopentadienyl)trimethylhafnium(IV)

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
The molecule of the title organometallic hafnium(IV) compound, [Hf(CH3)3(C13H21)] or [HfMe3(η5-C5H3-1,3-tBu2)], adopts the classical three-legged piano-stool geometry for monocyclopentadienylhafnium(IV) derivatives with the three methyl groups bonded to ...
Adrián Pérez-Redondo   +2 more
doaj   +1 more source

Synthesis of Hafnium(IV) Polyaminoacetates

open access: yesMolecules, 2021
The interaction of hafnium(IV) salts (oxide-dichloride, chloride, and bromide) with nitrilotriacetic acid (NTA), diethylenetriamminepentaacetic acid (DTPA), 1,2-diaminocyclohexanetetraacetic acid (CDTA), 1,3-dipropylmino-2-hydroxy N,N,N′,N′-tetraacetic ...
Alexandra T. Shulyak   +8 more
doaj   +1 more source

Structure Tuning of Hafnium Metal–Organic Frameworks through a Mixed Solvent Approach

open access: yesCrystals, 2022
The recent development of water-stable metal–organic frameworks (MOFs) has significantly broadened the application scope of this emerging type of porous material. Structure tuning of hafnium MOFs is less studied compared with zirconium MOFs. In this work,
Yanhong Ma, Xin Zhang
doaj   +1 more source

DISTRIBUSI HAFNIUM PADA MODEL KESETIMBANGAN CAIR – CAIR EKSTRAKSI PEMISAHAN ZIRKONIUM DAN HAFNIUM [PDF]

open access: yes, 2021
Di alam Zirkonium selalu terdapat bersama – sama dengan Hafnium. Keduanya merupakan unsur golongan IVB yang mempunyai kemiripan sifat kimia tetapi berbeda tampang lintang serapan neutron, masing –masing sebesar 0,18 barn dan 108 barn.
Husnurrofiq, Dedy
core   +1 more source

Crystal structure of tetrakis(1,1,1,5,5,5-hexafluoroacetylacetonato)hafnium(IV)

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2018
The crystal structure of the title compound, [Hf(C5HF6O2)4], has been determined. The asymmetric unit contains two Hf(hfac)4 molecules (hfac = 1,1,1,5,5,5-hexafluoroacetylacetonate); both are located on general positions and have identical structures ...
W. Franklin Schwandt   +2 more
doaj   +1 more source

Heteroepitaxy of hafnium diboride on a hafnium(0001) single crystal surface.

open access: yes, 1998
Heteroepitaxy of hafnium diboride on a hafnium(0001) single crystal ...
Michael P. Belyansky (7980569)
core   +6 more sources

Hafnium-Oxide 3‑D Nanofilms via the Anodizing of Al/Hf Metal Layers

open access: yes, 2018
Hafnium-oxide films with self-organized nanostructured 3-D architectures and variable dimension (10 to 400 nm) are synthesized via the high-current anodizing of thin aluminum-on-hafnium layers in phosphoric, malonic, and oxalic acid electrolytes.
Maria Bendova (1274943)   +3 more
core   +1 more source

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