FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2009484351> ?p ?o ?g. }

• W2009484351 abstract "Nanostructured vanadium-hydrides, ${ensuremath{beta}}_{2}ensuremath{-}{mathrm{VH}}_{x},$ with typical grain sizes of 80 nm $(x=0.82),$ 30 nm $(x=0.73),$ and 10 nm $(x=0.67)$ were prepared by mechanical milling under hydrogen atmosphere. The final grain size, about 10 nm, does not change any more with increasing milling time, and a homogeneous amorphous phase is not formed in this system, even after milling for 300 min. The hydrogen concentration in the grains ${x}_{mathrm{G}}$ decreases with decreasing grain size from ${x}_{mathrm{G}}=phantom{rule{0ex}{0ex}}0.82$ in 80-nm grains to 0.72 in 10-nm grains. This indicates a modification of the ${ensuremath{beta}}_{2}ensuremath{-}ensuremath{gamma}$ phase boundary in the V-H system with nanometer-scale grains. The hydrogen concentration in the intergrains, ${x}_{mathrm{IG}}$ $ensuremath{approx}0.5--0.6,$ is smaller than in the grains, and was found to be nearly independent of the grain size. The hydrogen diffusivity has been studied by NMR measurements of the proton spin-lattice relaxation ${ensuremath{Gamma}}_{1}.$ Generally, the measured ${ensuremath{Gamma}}_{1}$ consists of contributions that result from both hydrogen in the grains and in the intergrain regions. Due to the smaller spin-spin relaxation rate ${ensuremath{Gamma}}_{2}$ of the protons in the intergrain regions, their contribution to ${ensuremath{Gamma}}_{1}$ could be measured separately by the spin-echo technique. The relaxation data indicate that, at a given temperature, the hydrogen diffusivity in the intergrain regions is substantially higher than inside the grains. The frequency dependence of the dipolar contribution ${ensuremath{Gamma}}_{1,mathrm{d}mathrm{i}mathrm{p}}$ reveals a distribution in the activation enthalpy for hydrogen in the intergrain regions. This distribution was found to be the broader the smaller the grain size. A change in the diffusion mechanisms, presumably arising from the ${ensuremath{beta}}_{2}ensuremath{-}ensuremath{delta}$ phase transition, takes place at about 200 K. The exchange of hydrogen atoms between the grains and the intergrain regions occurs very slowly and is negligible on the time scale given by ${ensuremath{Gamma}}_{1}.$" @default.
• W2009484351 created "2016-06-24" @default.
• W2009484351 creator A5016180945 @default.
• W2009484351 creator A5032329276 @default.
• W2009484351 creator A5055302272 @default.
• W2009484351 date "2001-02-13" @default.
• W2009484351 modified "2023-09-27" @default.
• W2009484351 title "Hydrogen in nanostructured vanadium-hydrogen systems" @default.
• W2009484351 cites W1558753232 @default.
• W2009484351 cites W1964299912 @default.
• W2009484351 cites W1965568710 @default.
• W2009484351 cites W1965721670 @default.
• W2009484351 cites W1972134868 @default.
• W2009484351 cites W1974503208 @default.
• W2009484351 cites W1975088059 @default.
• W2009484351 cites W1975261029 @default.
• W2009484351 cites W1980340799 @default.
• W2009484351 cites W1982428640 @default.
• W2009484351 cites W1984471706 @default.
• W2009484351 cites W1985433011 @default.
• W2009484351 cites W1990340445 @default.
• W2009484351 cites W1991311548 @default.
• W2009484351 cites W1992758438 @default.
• W2009484351 cites W1993075891 @default.
• W2009484351 cites W1994852503 @default.
• W2009484351 cites W1996252004 @default.
• W2009484351 cites W1996913639 @default.
• W2009484351 cites W1997171666 @default.
• W2009484351 cites W1997238964 @default.
• W2009484351 cites W1998696693 @default.
• W2009484351 cites W2003149364 @default.
• W2009484351 cites W2005443068 @default.
• W2009484351 cites W2009921667 @default.
• W2009484351 cites W2010078935 @default.
• W2009484351 cites W2011837622 @default.
• W2009484351 cites W2012250452 @default.
• W2009484351 cites W2027667129 @default.
• W2009484351 cites W2032039849 @default.
• W2009484351 cites W2035309903 @default.
• W2009484351 cites W2040149789 @default.
• W2009484351 cites W2042396841 @default.
• W2009484351 cites W2044731476 @default.
• W2009484351 cites W2055648074 @default.
• W2009484351 cites W2057169320 @default.
• W2009484351 cites W2064179842 @default.
• W2009484351 cites W2066536459 @default.
• W2009484351 cites W2067314341 @default.
• W2009484351 cites W2067365034 @default.
• W2009484351 cites W2069541404 @default.
• W2009484351 cites W2070668135 @default.
• W2009484351 cites W2072706556 @default.
• W2009484351 cites W2073271102 @default.
• W2009484351 cites W2073310102 @default.
• W2009484351 cites W2076717360 @default.
• W2009484351 cites W2079299139 @default.
• W2009484351 cites W2083600722 @default.
• W2009484351 cites W2087412101 @default.
• W2009484351 cites W2088789772 @default.
• W2009484351 cites W2102815977 @default.
• W2009484351 cites W2256873626 @default.
• W2009484351 cites W2260021529 @default.
• W2009484351 cites W2313782373 @default.
• W2009484351 cites W2315311130 @default.
• W2009484351 cites W2318857561 @default.
• W2009484351 cites W2324047154 @default.
• W2009484351 cites W2331902568 @default.
• W2009484351 cites W8841443 @default.
• W2009484351 doi "https://doi.org/10.1103/physrevb.63.094307" @default.
• W2009484351 hasPublicationYear "2001" @default.
• W2009484351 type Work @default.
• W2009484351 sameAs 2009484351 @default.
• W2009484351 citedByCount "42" @default.
• W2009484351 countsByYear W20094843512012 @default.
• W2009484351 countsByYear W20094843512013 @default.
• W2009484351 countsByYear W20094843512014 @default.
• W2009484351 countsByYear W20094843512015 @default.
• W2009484351 countsByYear W20094843512016 @default.
• W2009484351 countsByYear W20094843512017 @default.
• W2009484351 countsByYear W20094843512019 @default.
• W2009484351 countsByYear W20094843512020 @default.
• W2009484351 countsByYear W20094843512022 @default.
• W2009484351 countsByYear W20094843512023 @default.
• W2009484351 crossrefType "journal-article" @default.
• W2009484351 hasAuthorship W2009484351A5016180945 @default.
• W2009484351 hasAuthorship W2009484351A5032329276 @default.
• W2009484351 hasAuthorship W2009484351A5055302272 @default.
• W2009484351 hasConcept C113196181 @default.
• W2009484351 hasConcept C121332964 @default.
• W2009484351 hasConcept C15744967 @default.
• W2009484351 hasConcept C185592680 @default.
• W2009484351 hasConcept C191897082 @default.
• W2009484351 hasConcept C192191005 @default.
• W2009484351 hasConcept C192562407 @default.
• W2009484351 hasConcept C2776029896 @default.
• W2009484351 hasConcept C43617362 @default.
• W2009484351 hasConcept C47908070 @default.
• W2009484351 hasConcept C504678139 @default.
• W2009484351 hasConcept C512968161 @default.
• W2009484351 hasConcept C62520636 @default.
• W2009484351 hasConcept C77805123 @default.

• next