Pregled bibliografske jedinice broj: 82819
Magnetization and Microwave Study of Superconducting MgB2
Magnetization and Microwave Study of Superconducting MgB2 // Physical review. B, Condensed matter and materials physics, 66 (2002), 1; 014505, 7 doi:10.1103/PhysRevB.66.014505 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 82819 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Magnetization and Microwave Study of Superconducting MgB2
Autori
Dulčić, Antonije ; Paar, Dalibor ; Požek, Miroslav ; Williams, Grant V. M. ; Krämer, Steffen
Izvornik
Physical review. B, Condensed matter and materials physics (1098-0121) 66
(2002), 1;
014505, 7
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
critical-current density ; upper critical-field ; high-pressure ; penetration depth ; vortex dynamics ; temperature ; films ; transport ; frequency ; cavity ; microwave
Sažetak
We report magnetic-field-dependent magnetization and microwave impedance measurements on a MgB2 superconductor prepared by high-pressure synthesis. We find that the upper critical field is linearly dependent on temperature near T-c and the dc irreversibility field exponent is similar to1.4. Microwave surface impedance measurements were carried out in applied magnetic fields up to 8 T. The low-field data show an absence of weak links in the superconducting state. By inverting the surface impedance data, we find a vortex depinning frequency that decreases with increasing magnetic field, which is characteristic of collective pinning.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
