NMR EVIDENCE FOR A CHANGE IN LOCAL ELECTRONIC-STRUCTURE ACCOMPANYING HYDROGEN PAIRING IN YTTRIUM-HYDROGEN SOLID-SOLUTIONS
UNSPECIFIED (1991) NMR EVIDENCE FOR A CHANGE IN LOCAL ELECTRONIC-STRUCTURE ACCOMPANYING HYDROGEN PAIRING IN YTTRIUM-HYDROGEN SOLID-SOLUTIONS. PHYSICAL REVIEW B, 44 (17). pp. 9692-9695. ISSN 0163-1829Full text not available from this repository.
Measurements of the proton spin-lattice relaxation (SLR) rate in yttrium-hydrogen solid solutions (alpha-YH(x)) show that the hydrogen-pairing phenomenon, which occurs in the temperature range 170-300 K, is accompanied by a continuous, strong (22%) decrease in the Korringa parameter, R1e/T, with decreasing temperature, where R1e, is the conduction-electron contribution to the total SLR rate. This shows that a substantial (37%) change occurs in the product of the hyperfine field at the proton site and the local d-band density of states at the Fermi level, Nd(E(F)), when hydrogens become paired. Similar behavior has not been detected in the corresponding Sc-H and Lu-H systems in which pairing also occurs.
|Item Type:||Journal Item|
|Subjects:||Q Science > QC Physics|
|Journal or Publication Title:||PHYSICAL REVIEW B|
|Publisher:||AMERICAN PHYSICAL SOC|
|Official Date:||1 November 1991|
|Number of Pages:||4|
|Page Range:||pp. 9692-9695|
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