Title :
Is there a paramagnetic Meissner-Ochsenfeld effect?
Author :
Atzmony, U. ; Bennett, L.H. ; Swartzendruber, L.J.
Author_Institution :
Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
fDate :
11/1/1995 12:00:00 AM
Abstract :
We report on low-field measurements of the Meissner effect in a BYCO high-Tc superconductor with large pinning. The positive Meissner effect (PME) observed at low fields in a SQUID magnetometer is shown to be an artifact arising from the presence of a small field gradient. No PME is observed using an extraction technique to measure the magnetization
Keywords :
Meissner effect; barium compounds; flux pinning; high-temperature superconductors; magnetisation; paramagnetic materials; yttrium compounds; SQUID magnetometer; YBaCuO; high temperature superconductor; large pinning; low fields; low-field measurements; magnetization; paramagnetic Meissner-Ochsenfeld effect; positive Meissner effect; small field gradient; Cooling; Critical current; High temperature superconductors; Magnetic field measurement; Magnetic flux; Magnetization; NIST; Paramagnetic materials; SQUID magnetometers; Superconducting transition temperature;
Journal_Title :
Magnetics, IEEE Transactions on
