VAC nonlinearity in YBa2Cu3O7-x high-Tc superconductor defined by the modulation technique
Creators
- 1. Mordovskij Gosudarstvennyj Univ., Saransk (Russian Federation)
Description
VAC nonlinearity is investigated in the samples of ceramics and YBa2Cu3O7-x HTSC. The investigations were performed using 4-contact modulation technique in the temperature range (T) close to the temperature of superconducting transition Tc-T < or ≅ Tc. The application of this modulation technique, which is very sensitive to the shape of U(J) curve of voltage harmonic-current dependence, shows that the power law is valid only for very small points. Therefore, literature references to the varieties of Kosterlitz - Taules model for explanation of YBa2Cu3O7-x VAC nonlinearity in high currents are doubtful. In conclusion it is noted that explanation of nonpower pattern of U(J) requires a new approach to the problem of phase transitions in granulated and inhomogeneous HTSC systems
Additional details
Additional titles
- Original title (Russian)
- Нелинейност' VAKh VTSP YBa
Publishing Information
- Journal Title
- Pis'ma v Zhurnal Tekhnicheskoj Fiziki
- Journal Volume
- 18
- Journal Issue
- 23
- Journal Page Range
- p. 5-9.
- ISSN
- 0320-0116
- CODEN
- PZTFDD
INIS
- Country of Publication
- Russian Federation
- Country of Input or Organization
- Russian Federation
- INIS RN
- 24060638
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- BARIUM COMPOUNDS; CERAMICS; CUPRATES; ELECTRIC CONDUCTIVITY; ELECTRIC CURRENTS; HIGH-TC SUPERCONDUCTORS; MONOCRYSTALS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0065-0273 K; TRANSITION TEMPERATURE; YTTRIUM COMPOUNDS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; COPPER COMPOUNDS; CRYSTALS; CURRENTS; ELECTRICAL PROPERTIES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SUPERCONDUCTORS; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS