Nuclear-magnetic-resonance study of the electronic transition in near- equiatomic V--Ru alloys

Journal Article · Wed Aug 01 04:00:00 EDT 1973 · Phys. Rev., B, v. 8, no. 3, pp. 1026-1031

DOI:https://doi.org/10.1103/PhysRevB.8.1026· OSTI ID:4405083

Welsh, L B; Chu, C W

For the near-equiatomic V-Ru alloys (46-50-at.% Ru) Chu et al. have observed dramatic changes in the electronic properties of these alloys with an accompanying tetragonal crystallographic distortion. Using the V/sup 51/ nuclear magiietic resonance as a probe of the electronic properties, we have studied the Knight shift K and spin-lattice relaxation rate R in the high-temperature cubic phase and low-temperature tetragonal phase. The dramatic decrease in R and increase in K from the cubic to tetragonal phases are strongly concentration dependeni These results correlate well with the strongly concentration-dependent results for the bulk electronic properties. An analysis of the NMR and susceptibility data shows that the change in the electronic properties from the cubic to tetragonal phases results from a dramatic decrease of the d-electron density of states at the Fermi energy, and that R and K are dominated by the d- orbital contributions. (auth)

• Research Organization: Department of Physics, Northwestern University, Evanston, Illinois 60201
• Sponsoring Organization: USDOE
• NSA Number: NSA-29-005478
• OSTI ID: 4405083
• Journal Information: Phys. Rev., B, v. 8, no. 3, pp. 1026-1031, Journal Name: Phys. Rev., B, v. 8, no. 3, pp. 1026-1031; ISSN PLRBA
• Country of Publication: United States
• Language: English

Related Subjects

*RUTHENIUM ALLOYS-- ELECTRONIC STRUCTURE
*VANADIUM 51-- NUCLEAR MAGNETIC RESONANCE
*VANADIUM BASE ALLOYS-- ELECTRONIC STRUCTURE
KNIGHT SHIFT
N50230* --Metals
Ceramics
& Other Materials--Metals & Alloys--Properties
Structure & Phase Studies
SPIN-LATTICE RELAXATION