Superconducting and magnetic properties of V/sub 3-x/Fe/sub x/Si and V/sub 3-x/Mn/sub x/Si

Conference · Thu Jan 01 00:00:00 EST 1976 · AIP (Am. Inst. Phys.) Conf. Proc.; (United States)

OSTI ID:7359087

Bergner, R L; Rao, V U.S.; Sankar, S G

The superconducting, magnetic and structural properties of intermetallic compounds V/sub 3 - x/Fe/sub x/Si and V/sub 3 - x/Mn/sub x/Si were investigated. The crystal strucure is of the ..beta..-W type up to about x = 0.5 in both systems, with the lattice parameter decreasing with increasing x. The superconducting transition temperature, T/sub S/, and the upper critical field, H/sub c2/, were determined from resistivity measurements. For x = 0.015 in V/sub 3 - x/Fe/sub x/Si, H/sub c2/ was enhanced over that of V/sub 3/Si. However, no such enhancement was found upon addition of Mn impurities to V/sub 3/Si. Susceptibility measurements indicate a local moment on Fe in V/sub 3 - x/Fe/sub x/Si with ..mu../sub eff/ approximately 1.2 ..mu../sub B/. No detectable moment was associated with Mn in V/sub 3 - x/Mn/sub x/Si. These results indicate an antiferromagnetic coupling between Fe and conduction electron spins. On the Fe-rich side (x = 2.0 to 3.0), the crystal structure was of the cubic BiF/sub 3/ type. In this region the Curie temperature decreased with increasing vanadium content.

• Research Organization: Univ. of Pittsburgh
• OSTI ID: 7359087
• Journal Information: AIP (Am. Inst. Phys.) Conf. Proc.; (United States), Vol. 29; Conference: 21. annual conference on magnetism and magnetic materials, Philadelphia, PA, USA, 9 Dec 1975; Other Information: See CONF-751209--
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
VANADIUM SILICIDES
MAGNETIC PROPERTIES
SUPERCONDUCTIVITY
IRON SILICIDES
MANGANESE SILICIDES
BETA-W LATTICES
CRITICAL FIELD
MAGNETIC SUSCEPTIBILITY
TRANSITION TEMPERATURE
CRYSTAL LATTICES
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
IRON COMPOUNDS
MAGNETIC FIELDS
MANGANESE COMPOUNDS
PHYSICAL PROPERTIES
SILICIDES
SILICON COMPOUNDS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
360104* - Metals & Alloys- Physical Properties
656102 - Solid State Physics- Superconductivity- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena- (-1987)