Nuclear magnetic resonance study of the electronic structure and hydrogen motion in the random b.c.c.-TaV2-H(D) system

Pulsed-field-gradient NMR study of hydrogen diffusivity in random b.c.c. alloys VyTa1−y

“…Nuclear magnetic resonance (NMR) measurements of the proton spin-lattice relaxation rates R 1 in b.c.c. V y Nb 1−y H 0.2 [7] and V y Ta 1−y H x [9,10] have confirmed high hydrogen mobility in these systems. However, such relaxation rate measurements cannot give a direct information on the diffusion coefficient of hydrogen.…”

Elastic properties of the Ta–V system: bcc Ta0.33V0.67and C15 TaV2

“…The random alloy, bcc Ta 0.33 V 0.67 , was prepared by arc melting appropriate amounts of high purity metals in a helium atmosphere as described previously [8,9]. The specimen for the present study was cut from a small ingot of material using a low speed diamond saw.…”

“…The addition of H alters the electronic structure, lifts the Fermi level away from the double-degeneracy point and gradually removes the anomalous behaviour as x is increased [7]. TaV 2 may be prepared as a C15 intermetallic compound or as a bcc random alloy [8,9]. This fact offers the possibility to study the elastic properties of the same material with two different structures.…”