The Influence of Fast Neutron Irradiation on the Magnetostriction of Ceramic YBa2Cu3O7-δ Sample |
| A. Nabiałeka, S. Vasilieva, B. Pytelb, V.V. Chabanenkoc and S. Piechotaa
aInstitute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland bInstitute of Atomic Energy, 05-400 Otwock-Świerk, Poland cDonetsk Physico-Technical Institute, Ukrainian Academy of Sciences, 72 R. Luxemburg str., 83114, Donetsk, Ukraine |
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| We investigated the magnetostriction of ceramic YBa2Cu3O7-δ sample both before and after fast neutron irradiation with the fluency of 7.55×1017 n/cm2 and energy of above 0.5 MeV. We have found that after irradiation the widths of both transverse and longitudinal magnetostriction hysteresis loops at a given temperature and at a given external magnetic field increased several times. At 4.2 K and in 10 tesla the widths of the magnetostriction hysteresis loop of the irradiated sample are of an order of 10-5. The results can be understood in the framework of the model of the magnetostriction induced by the pinning forces, assuming the stress in the sample to be induced mainly by the intragrain screening currents. |
| DOI: 10.12693/APhysPolA.106.739 PACS numbers: 74.25.Qt, 74.72.Bk, 75.80.+q |