Magnetic flow instabilities in textured samples of YBaCuO
V. V. ChabanenkoPhysicotechnical Institute, Ukrainian Academy of Sciences, 340114 DonetskS. PekhotaInstitute of Physics, Polish Academy of Sciences, 02–668 WarsawG. SzimcakInstitute of Physics, Polish Academy of Sciences, 02–668 WarsawI.B. KrinetskiiMoscow State University, 117234 Moscow
ABI
Abstract
The anisotropy of instability evolution in textured yttrium samples with residual magnetization ≈ 600 emu/g is studied in magnetic fields up to 12 T. Large (∼500 emu/g) jumps in the magnetic moment of the sample associated with magnetothermal instability are discovered. An unusually large (∼10−4) magnetostriction due to magnetic flow pinning is revealed, as well as the stabilization of magnetic properties of textured samples as a result of magnetization reversal.
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