Critical magnetic fields of distorted gallium films

Journal Article · Thu Dec 01 04:00:00 EST 1977 · Sov. J. Low Temp. Phys. (Engl. Transl.); (United States)

OSTI ID:6677849

Lazarev, V G; Semenenko, E E; Tutov, V I

The paper presents results of an investigation of critical magnetic fields of gallium films freshly condensed on a substrate cooled to the temperature of liquid helium and also annealed to 60/sup 0/K. The thickness of the film is approx.150 A. It is found that the transverse critical magnetic field in freshly condensed films is approx.10/sup 5/ Oe for T/sub K/approx.8.3 /sup 0/K, i.e., H/sub K/1(O) approx.1.2 x 10/sup 4/ T/sub K/. The function H/sub K/perpendicular(T) deviates considerably from a linear law; this is probably connected with the multiphase nature of the gallium films. The values of the critical magnetic field after annealing to 60 /sup 0/K are slightly reduced, and the superconducting transition curve in this case is more smeared.

• Research Organization: Khar'kov Physicotechnical Institute of the Academy of Sciences of the Ukrainian SSR
• OSTI ID: 6677849
• Journal Information: Sov. J. Low Temp. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Low Temp. Phys. (Engl. Transl.); (United States) Vol. 3:12; ISSN SJLPD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANNEALING
CRITICAL FIELD
ELEMENTS
FILMS
GALLIUM
HEAT TREATMENTS
MAGNETIC FIELDS
METALS
SUPERCONDUCTING FILMS
TEMPERATURE DEPENDENCE
ULTRALOW TEMPERATURE