UNSPECIFIED (1991) NMR EVIDENCE FOR A CHANGE IN LOCAL ELECTRONIC-STRUCTURE ACCOMPANYING HYDROGEN PAIRING IN YTTRIUM-HYDROGEN SOLID-SOLUTIONS. [Journal Item]

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Abstract

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
ISSN:	0163-1829
Date:	1 November 1991
Volume:	44
Number:	17
Number of Pages:	4
Page Range:	pp. 9692-9695
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/22385

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