Properties of superconducting vanadium nitride sputtered films
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
High-quality films of VN were prepared by reactive dc sputtering with the use of a triode source. The films were characterized by x-ray diffraction, temperature-dependent electrical resistivity, and superconducting T/sub c/. Deposition onto single-crystal sapphire substrates heated to 600 /sup 0/C resulted in uniaxial growth of grains along the (111) direction. Residual resistance ratios as high as 5 were obtained and T/sub c/ up to 8.9 K. The dependence of T/sub c/ on a lattice parameter differs considerably from previous reports in the literature. The temperature-dependent resistivity was found to be consistent with the parallel-resistor model. Tunnel junctions were fabricated by direct plasma oxidation of the film surface and preliminary quasiparticle results confirm that VN exhibits strong electron-phonon coupling. Josephson junctions utilizing an artificial CdS barrier display diffraction characteristics leading to an upper-bound estimate of the penetration depth of lambdaapprox.1300 A. .AE
- Research Organization:
- Illinois Institute of Technology, Chicago, Illinois 60616
- OSTI ID:
- 5386985
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 32:5; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
Similar Records
Superconducting and structural properties of sputtered thin films of YBa/sub 2/Cu/sub 3/O/sub 7-//sub x/
DC reactive magnetron sputtered NbN thin films prepared with and without hollow cathodes enhancement
An ultrahigh vacuum, magnetron sputtering system for the growth and analysis of nitride superlattices
Journal Article
·
Sun Dec 20 23:00:00 EST 1987
· Appl. Phys. Lett.; (United States)
·
OSTI ID:5798366
DC reactive magnetron sputtered NbN thin films prepared with and without hollow cathodes enhancement
Conference
·
Thu Feb 28 23:00:00 EST 1991
· IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)
·
OSTI ID:5621013
An ultrahigh vacuum, magnetron sputtering system for the growth and analysis of nitride superlattices
Journal Article
·
Tue Dec 31 23:00:00 EST 1991
· Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States)
·
OSTI ID:5527860
Related Subjects
36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON-PHONON COUPLING
FILMS
LATTICE PARAMETERS
NITRIDES
NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
SPUTTERING
SUPERCONDUCTING FILMS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
VANADIUM COMPOUNDS
VANADIUM NITRIDES
360104* -- Metals & Alloys-- Physical Properties
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON-PHONON COUPLING
FILMS
LATTICE PARAMETERS
NITRIDES
NITROGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
SPUTTERING
SUPERCONDUCTING FILMS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
VANADIUM COMPOUNDS
VANADIUM NITRIDES